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1st Order Ordinary Differential-equations With Several Periodic-solutions

Bibliographic reference Mawhin, Jean. 1st Order Ordinary Differential-equations With Several Periodic-solutions. In: Zeitschrift fuer Angewandte Mathematik und Physik, Vol. 38, no. 2, p. 257-265 (1987)
Permanent URL http://hdl.handle.net/2078.1/53875
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