Não informado. (1996). Advances in Differential Equations. Khayyam.
Chicago-referens (17:e uppl.)Não informado. Advances in Differential Equations. Athens, Ohio: Khayyam, 1996.
MLA-referens (8:e uppl.)Não informado. Advances in Differential Equations. Khayyam, 1996.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.