Approximate methods of higher analysis

ανά Kantorovitz, L. V. 1912-1986 ((Leonid Vitalevich)), Krylov, V. I. 1902- ((Vladimir Ivanovich))
Έκδοση 1964

Naherungsmethoden der hoheren Analysis

ανά Kantorovitz, L. V. 1912-1986 ((Leonid Vitalevich)), Krylov, V. I. 1902- ((Vladimir Ivanovich))
Έκδοση 1956