共 50 条
- [1] WEAK PERIODIC-SOLUTIONS OF A NONLINEAR-WAVE EQUATION MATEMATICA APLICADA E COMPUTACIONAL, 1988, 7 (03): : 169 - 185
- [10] EXISTENCE OF A COUNTABLE SET OF PERIODIC-SOLUTIONS OF THE PROBLEM OF FORCED-OSCILLATIONS FOR A WEAKLY NONLINEAR-WAVE EQUATION MATHEMATICS OF THE USSR-SBORNIK, 1988, 136 (3-4): : 543 - 556