共 10 条
- [2] GRECO D, 1949, GIORN MAT BATTAGLINI, V79, P86
- [3] Langer R. E., 1947, AM MATH MONTHLY S, V54, P1
- [4] MAKHMUDOV AP, 1982, DIFF URAVN, V18, P64
- [5] MAKHMUDOV AP, 1982, SPEKTRALNAYA TEORIYA, P65
- [6] Naimark M.A., 1969, LINEINYE DIFFERENTSI
- [9] Zecca P., 1966, REND ACCAD SCI FIS, V33, P279
- [10] [No title captured]