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- [22] SOLUTIONS OF A FOURTH-ORDER DIFFERENTIAL EQUATION AMERICAN MATHEMATICAL MONTHLY, 1961, 68 (10): : 1013 - &
- [24] ON THE PERIODIC SOLUTIONS OF A CERTAIN NONLINEAR VECTOR DIFFERENTIAL EQUATION OF FOURTH-ORDER BULLETIN OF THE INSTITUTE OF MATHEMATICS ACADEMIA SINICA NEW SERIES, 2008, 3 (02): : 315 - 322
- [28] Nonlinear oscillations of fourth order quasilinear ordinary differential equations Acta Mathematica Hungarica, 2011, 132 : 207 - 222
- [30] MULTIPLICITY OF CONCAVE AND MONOTONE POSITIVE SOLUTIONS FOR NONLINEAR FOURTH-ORDER ORDINARY DIFFERENTIAL EQUATIONS FIXED POINT THEORY, 2013, 14 (02): : 345 - 358