Periodic solutions for equation x˙=A(t)xm+B(t)xn+C(t)xl with A(t) and B(t) changing signs 期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

Periodic solutions for equation x˙=A(t)xm+B(t)xn+C(t)xl with A(t) and B(t) changing signs

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收稿时间：	2011-11-04
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