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| 2004 | ||
|---|---|---|
| 2 | EE | H. M. Abdelhafez: Resonance of a nonlinear forced system with two-frequency parametric and self-excitations. Mathematics and Computers in Simulation 66(1): 69-83 (2004) |
| 2002 | ||
| 1 | EE | H. M. Abdelhafez: Resonance of multiple frequency excitated systems with quadratic, cubic and quartic non-linearity. Mathematics and Computers in Simulation 61(1): 17-34 (2002) |