000 00294nam a2200097Ia 4500
008 240404s9999 xx 000 0 und d
100 _aDavies, E. B.
245 0 _aSpectral Theory and Differential Operators
_cE. B. Davies
260 _aCambridge
_bCambridge University Press
_c1995
942 _aIMAR
_cCART
999 _c717
_d717