Tuwankotta, J. M. Averaging method and normal form for coupled oscillators with widely-spaced frequencies and energy-preserving nonlinearity. (English) Zbl 1108.34031 J. Indones. Math. Soc. 10, No. 2, 125-135 (2004). Reviewer: Josef Hainzl (Freiburg) MSC: 34C15 34C29 34C20 × Cite Format Result Cite Review PDF
Meng, F.; Wang, J. Oscillation criteria for second order quasi-linear neutral delay differential equations. (English) Zbl 1109.34049 J. Indones. Math. Soc. 10, No. 2, 61-75 (2004). Reviewer: Zaihong Wang (Beijing) MSC: 34K11 34K40 × Cite Format Result Cite Review PDF