http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of a conference held in Oberwolfach, FRG, March 19-25, 1989
K. Ambos-Spies, G.H. Müller, and G.E. Sacks (eds.).
Lecture notes in mathematics (Springer-Verlag) ; 1432