For a more detailed introduction to the ISBDs, see: Byrum, John, "The ISBD's: What They Are and How They Are Used" International Cataloguing and Bibliographic Control v. 23, no 4: 67-71 (Oct./Dec. 1994).
2.
Available at http://www.ifla.org/VII/ s13/frbr/frbr.htm
3.
Available at http://www.ifla.org/VI/3/ nd1/isbdlist.htm
4.
Available at http://www.ifla.org/ VI/3/nd1/isbdtran.htm