000 00263nam a2200109Ia 4500
100 _aLAVRENTIER,M M
365 _cRS
365 _d1
942 _cENGBK
245 _aSome Improperly Posed Problem of Mathematical Physics Vol II
260 _bSpringer Verlag
_aNEWYORK
999 _c28238
_d28238