共 50 条
[45]
On the periodic solutions of certain non-linear equations of the fourth order
[J].
COMPTES RENDUS DE L ACADEMIE DES SCIENCES DE L URSS,
1939, 25
:731-734
[46]
BIFURCATION DIAGRAMS AND PERIODIC-SOLUTIONS TO NON-LINEAR EQUATIONS
[J].
ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND PHYSIK,
1981, 32 (04)
:470-473
[48]
PERIODIC SOLUTIONS OF NON-LINEAR EVOLUTION EQUATIONS IN BANACH SPACES
[J].
CANADIAN JOURNAL OF MATHEMATICS,
1971, 23 (01)
:189-&
[50]
PERIODIC SOLUTIONS OF NON-LINEAR DIFFERENTIAL EQUATIONS OF THE 2ND ORDER .5.
[J].
PROCEEDINGS OF THE CAMBRIDGE PHILOSOPHICAL SOCIETY,
1951, 47 (04)
:752-755