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In this paper, we study a simplified model with delay for a control of testosterone secretion. Employing the ejective fixed point principle due to Nussbaum, the existence of slowly oscillating periodic solution of the model is proven when the delay parameter r > r 0, for some constant r 0 > 0.
Acta Mathematicae Applicatae Sinica – Springer Journals
Published: Jan 1, 2005
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