共 50 条
- [21] ON THE APPROXIMATE SOLUTION OF NON-LINEAR OPERATOR-EQUATIONS IZVESTIYA AKADEMII NAUK AZERBAIDZHANSKOI SSR SERIYA FIZIKO-TEKHNICHESKIKH I MATEMATICHESKIKH NAUK, 1980, (02): : 17 - 23
- [29] PERIODS OF NON-LINEAR OSCILLATORS BULLETIN OF THE AMERICAN PHYSICAL SOCIETY, 1979, 24 (01): : 54 - 54