000 00472nmm a2200145Ia 4500
008 230201s9999||||xx |||||||||||||||||und||
020 _a9783642882104
100 _aMichail M. Lavrentiev
245 0 _aSome Improperly Posed Problems of Mathematical Physics
250 _a1967
260 _bSpringer Berlin Heidelberg
_c1967
440 _aSpringer Tracts in Natural Philosophy
650 _aMathematics and Statistics
856 _uhttps://doi.org/10.1007/978-3-642-88210-4
999 _c23656
_d23656