Yan-Qian, Y., & Lo, C. Y. (1986). Theory of limit cycles. Providence: American Mathematical Society.
Παραπομπή Chicago StyleYan-Qian, Ye, and Chi Y. Lo. Theory of Limit Cycles. Providence: American Mathematical Society, 1986.
Παραπομπή MLAYan-Qian, Ye, and Chi Y. Lo. Theory of Limit Cycles. Providence: American Mathematical Society, 1986.
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