Alexa: The Web Information Company (2011). Global Top 500.  Retrieved 14 Dec. 2011 from: http://www.alexa.com/site/ds/top_sites?ts_mode=global&lang=none
                                                                                                                American Society for Indexing (2012).Indexing the Web.Retrieved 7 May 2011 from: http://www.asindexing.org/i4a/pages/index.cfm?pageid=3418
                                                                                                                Aqa Abedi, E. (2012), “The effect of syntax on the indexing & ranking of metadata records by the web search engine: a comparative study on MARCXML and DCXML metadata records”, unpublished Master’s thesis, Science and Research Branch, Islamic Azad University, Tehran (in Persian).
                                                                                                                Asadi, S.aied;  Jamali, H.amid R. (2004). Shifts in Search Engine Development: A Review of Past, Present and Future Trends in Research on Search Engines. Retrieved 7 May 2011 from:  http://www.webology.ir/2004/v1n2/a6.html
                                                                                                                Bifet, A.lbert; Castillo, C.arlos (2005).An Analysis of Factors Used in Search Engine Ranking. Retrieved 7 May 2011 from: http://airweb.cse.lehigh.edu/2005/bifet.pdf
                                                                                                                Bray, T.im; Paoli, J.ean; Sperberg-McQueen, C. M.; Maler, E.ve; Yergeau, F.rançois (2008). Extensible Markup Language (XML) 1.0 (Fifth Edition): W3C Recommendation 26 November 2008. Retrievd 7 Feb. 2012 from: http://www.w3.org/TR/xml/
                                                                                                                Buzzi, M.arina; Andronico, P.atrizia; Leporini, B.arbara (2005).Accessibility and Usability of Search Engine Interfaces: Preliminary Testing. Retrieved 7 Feb. 2012 from: http://www.ui4all.gr/workshop2004/files/ui4all_proceedings/adjunct/accessibility/58.pdf
                                                                                                                Campex (2012).Top Search Engines. Retrieved 7 Feb. 2012 from: http://capmex.biz/resources/top-search-engines
                                                                                                                ComScore (2012).comScore Releases May 2012 U.S. Search Engine Rankings. Retrieved 7 Feb. 2012 from: http://www.comscore.com/Press_Events/Press_Releases/2012/6/comScore_Releases_May_2012_U.S._Search_Engine_Rankings
                                                                                                                Expertrating (2012).XML Tutorial: Embedding XML in HTML. Retrieved 7 Feb. 2012 from:http://www.expertrating.com/courseware/XMLCourse/XML-Embedding-HTML-8.asp
                                                                                                                Gigee, G.rant (2006).MARC and MARCXML. Retrieved 5 Nov. 2011 from:http://threegee.files.wordpress.com/2006/05/marcxml.pdf
                                                                                                                Gill, T.oney (2008).Metadata and the Web: Introduction to Metadata. Retrieved 5 Nov. 2011 from:http://www.getty.edu/research/publications/electronic_publications/intrometadata/metadata.pdf
                                                                                                                Google (2012).Web Master Tools: Meta tag. Retrieved 5 Feb. 2012 from:http://www.google.com/support/webmasters/bin/answer.py?answer=79812
                                                                                                                Henshaw, R.obin; Valauskas, E.dward J. (2001).Metadata as a Catalyst: Experiments with Metadata and Search Engines in the Internet Journal, First Monday. Retrieved 14 Dec. 2011 fromwww.librijournal.org/pdf/1999-3pp125-131.pdf
                                                                                                                Kelly (2006).MARC and MARC XML. Retrieved 14 Dec. 2011 from  http://threegee.files.wordpress.com/2006/05/marcxml.pdf
                                                                                                                Kyrnin, J.ennifer (2012). What Is Pre-Formatted Text?.Retrieved 14 Dec. 2012from:http://webdesign.about.com/od/htmltags/f/blfaqpre.htm
                                                                                                                Lewis, E.dward (2008). Top Ten Search Engines.Retrieved 14 Dec. 2011 from http://www.seoconsultants.com/search-engines/
                                                                                                                Luk, R.obert; Chan, A.lvin; Dillon, T.haram; Leong, H. V. (2000).A Survey of Search Engines for XML Documents. Retrieved 14 Dec. 2011 from: http://www.haifa.il.ibm.com/sigir00-xml/final-papers/Luk/XMLSUR.htm
                                                                                                                Luk, R.obert; Leong, H. V.; Dillon, T.haram S.; Chan, A.lvin T. S.; Croft, W. B.ruce; Allan, J.ames (2002). A Surveyin Indexing and Searching XML Documetns.Retrieved 14 Dec. 2011 from: http://onlinelibrary.wiley.com/doi/10.1002/asi.10056/full
                                                                                                                Mascaro, Michelle J (2004). The Value of Flexibility in Metadata Schemas.Retrieved 14 Dec. 2011 from: http://etd.ils.unc.edu:8080/dspace/bitstream/1901/57/1/michellemascaro.pdf
                                                                                                                Mohamed, Kh.aledA.f. (2006). The impact of metadata in web resources discovering.Online Information Review. 30 (2): 155-167
                                                                                                                Qin, J.ian (2000). Representation and Organization of Information in the Web Space: From MARC to XML. Retrieved 12 Dec. 2011 from: http://inform.nu/Articles/Vol3/v3n2p83-88.pdf
                                                                                                                Quevedo-Torrero, J.esus U.baldo (2004). IMPROVING WEB RETRIEVAL BY MINING THE HTML TAGS FOR KEYWORDS AND EXPLORING THE HYPERLINK STRUCTURES WEB PAGES.Ph. D. Dissertation, Department of Computer Science, University of Houston. Retrieved 12 Dec. 2011 from: http://wwwlib.umi.com/dissertations/fullcit/3156028
                                                                                                                Safari, M.ehdi (2005).Search Engine and Resource Discovery on the Web: Is Dublin Core an Impact Factor. Retrieved 12 Dec. 2011 from: www.webology.ir/2005/v2n2/a13.html
                                                                                                                Search Engine Watch (2007). How Search Engines Work. Retrieved 12 Dec. 2011 from: http://searchenginewatch.com/article/2065173/How-Search-Engines-Work
                                                                                                                Sharif, A. (2007), “Study the effectiveness of metadata elements on web page visibility in publicsearch engines”, available at: http://eprints.rclis.org/handle/10760/9171#.UHPNcVG94hA (accessed December 7, 2012) (in Persian).
                                                                                                                Sokvine, L.loyd (2000). An Evaluation of the Effectiveness of Current Dublin Core Metadata for Retrieval. Retrieved 12 Dec. 2011 from: www.vala.org.au/vala2000/2000pdf/Sokvitne.PDF
                                                                                                                Tabatabai Amiri F, Taheri S. M., Farajpahlou A, Osareh F, Moarrefzadeh A. “Web Search Engines and Indexing and Ranking the Content Object Including Metadata Elements Available at the Dynamic Information Environments”, Journal of Information Processing and Management. 2012; 27 (4) (in Persian). 
                                                                                                                Taheri, S. M. (2008). “A comparative study on the efficiency of Dublin Core Metadata Initiative and MARC21 Metadata Format in organizing information available on the World Wide Web”, Library and Information Quarterly. No.: 43 (in Persian).
                                                                                                                Taheri, S. M.; Hariri, N.adjla (2012).A Comparative Study on the Indexing and Ranking of the Content Objects Including the MARCXML and Dublin Core's Metadata Elements by General Search Engines. Electronic Library.Vol 30, issue 4
                                                                                                                Taheri, S.M. and Hariri, N. (2012), “A comparative study on the indexing and ranking of the content objects including the MARCXML and Dublin Core’s metadata elements by general search engines”, Library and Information Quarterly. No.: 48 (in Persian).
                                                                                                                Taheri, S.M., Hariri, N. and Fattahi, S.R. (2014), “Interoperability between metadata systems and web search engines: Current Development and Trends”, Library and Information Research Journal 3 (2) (in Persian).
                                                                                                                Turner, T.homas P.; Brackbill, L.ise (1998).Rising to the Top: Evaluating the Use of the HTML META Tag To Improve Retrieval of World Wide Web Documents through Internet Search Engines Retrieved 12 Dec. 2011 from: http://cat.inist.fr/?aModele=afficheN&cpsidt=1748620
                                                                                                                Woychowsky, E.dmond (2003). XML data islands offer a useful mechanism to display Web form: data. Retrieved 12 Dec. 2011 from: http://www.techrepublic.com/article/xml-data-islands-offer-a-useful-mechanism-to-display-web-form-data/1058668
                                                                                                                Yahoo (2012).What are meta tags?. Retrieved 12 Feb. 2012 from: http://help.yahoo.com/l/us/yahoo/smallbusiness/promotion/meta/meta-01.html.
                                                                                                                Zhang, J.in; Dimitroff, A.lexandra (2004).Internet search engine's response to metadata Dublin Core implementation. Retrieved 12 Dec. 2011 from http://portal.acm.org/citation.cfm?id=1142111
                                                                                                                Zhang, J.in; Dimitroff, A.lexandra (2005a).The impact of metadata implementation on Webpage visibility in search engine result (Part II). Retrieved 12 Dec. 2011 from: http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6VC8-4BHCBX4-2&_user=10&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000050221&_version=1&_urlVersion=0&_userid=10&md5=a853d410a866732d3f8ab5dd3217d412
                                                                                                                Zhang, J.in; Dimitroff, Al.exandra (2005b).The impact of  Webpage content characteristics on webpage visibility in search engineresult (Part I).Retrieved 12 Dec. 2011 from: http://web.simmons.edu/~braun/467/part_1.pdf
                                                                                        				 
                			
Send comment about this article