000 00342nam a22001337a 4500
005 20250411095746.0
008 250411b |||||||| |||| 00| 0 eng d
041 _aeng
100 _aKato, Tosio
245 _aPerturbation theory for linear operators
_c/ by Tosio Kato
260 _anew york
_bSpringer
_c1966
300 _a592p.
942 _cBK
999 _c36075
_d36075