http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Edited by M. Sh. Birman. Translated from Russian by J. R. Schulenberger.
Translation of Spektralnaia teoriia. Volnovye protsessy.
Problemy matematicheskoĭ fiziki. English v. 4