000 00471nmm a2200157Ia 4500
008 230424s9999||||xx |||||||||||||||||und||
020 _a9783540374442
100 _aW.N. Everitt
245 0 _aSpectral Theory and Differential Equations
250 _a1975
260 _c1975
_bSpringer Berlin
_aHeidelberg
300 _aProceedings
490 _aLecture Notes in Mathematics
_vv.448
650 _aMathematics and Statistics
856 _uhttps://doi.org/10.1007/BFb0067078
999 _c30133
_d30133