000 00286nam a2200121 4500
008 160616s 000 0
245 _aNonlinear differential equations
100 _aSansone, G
100 _aConati, R
500 _aB33,11 K41
942 _cBK
_2BK4440
080 _a517.968 SAN
999 _c4440
_d4440