000 00272nam a2200097Ia 4500
008 140917b1962 xxu||||| |||| 00| 0 eng d
082 _a515.352 PON
100 _aPontryagin, L. S.
245 _aOrdinary differential equations
260 _aReading :
_bAddison Wesley,
_c1962
999 _c180982
_d180982