Delsey, Tom. Functional Analysis of the MARC 21 Bibliographic and Holdings Formats. Revised March 21, 2002 (DE, 7 de junio, 2002: http://www.loc.gov/marc/marc-functional-analysis/) Functional Requirements for Bibliographic Records - Final Report (DE, 12 de junio, 2002: http://www.ifla.org/VII/s13/frbr/frbr1.htm#1) Hegna, Knut y Eeva Murtomaa. Data mining MARC to find: FRBR? (DE, 6 de junio, 2002: http://folk.uio.no/knuthe/dok/frbr/datamining.pdf) Hodge, Gail. Metadata made simpler. Bethesda : National Information Standards Organization, 2001. (DE, 7 de junio, 2002: http://www.niso.org/news/Metadata_simpler.pdf) Federación Internacional de Asociaciones de Bibliotecarios y Bibliotecas. ISBD (M) : descripción bibliográfica internacional normalizada para publicaciones monográficas. Madrid : ANABAD, 1993 Library of Congress. Network Development and MARC Standards Office. Functional Analysis of the MARC 21 Bibliographic and Holdings Formats: Displays for Multiple Versions from MARC 21 and FRBR (DE, 7 de junio, 2002: http://www.loc.gov/marc/marc-functional-analysis/multiple-versions.html#table1) Snijder, Ronald. Metadata standards and information analysis : a survey of current metadata standards and the underlying models. 2001. (DE, 13 de junio, 2002: http://www.geocities.com/ronaldsnijder/)