http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
proceedings of the VIII International School on Nuclear Physics, Neutron Physics, and Nuclear Energy, Varna, Bulgaria, 19-28 Nov. 1987
International School on Nuclear Physics, Neutron Physics, and Nuclear Energy 1987 : Varna, Bulgaria)
editors, W. Andrejtscheff, Chr. V. Christov, D. Elenkov.