00473nam a2200145Ia 4500003000400000008004100004020002800045040000800073100001800081245009900099260005000198300001400248365001300262440005200275LDD181029s9999    xx            000 0 und d  a9789812704689cUS68.00  cLDD  aTongren, Ding 0aApproaches to the qualitative theory of ordinary differential equationsbdynamiccDing Tongren  aNew JerseybWorld Scientific publishingc2007  aix, 383p.  bUS68.00  aPeking university series in mathematics- vol. 3