ZENG Qiuhai, WU Kuilin. The monotonicity of the period function of a SD oscillator[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2017,56(1):93-95.
ZENG Qiuhai, WU Kuilin. The monotonicity of the period function of a SD oscillator[J]. Acta Scientiarum Naturalium Universitatis SunYatseni, 2017,56(1):93-95.DOI: