Não informado. (2005). Mathematical Notes of the Academy of Sciences of the USSR. Consultants Bureau.
Chicago-referens (17:e uppl.)Não informado. Mathematical Notes of the Academy of Sciences of the USSR. New York: Consultants Bureau, 2005.
MLA-referens (8:e uppl.)Não informado. Mathematical Notes of the Academy of Sciences of the USSR. Consultants Bureau, 2005.
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