000 00574nam a2200229Ia 4500
003 OSt
005 20220928114521.0
006 a|||||r|||| 00| 0
007 ta
008 220927b |||||||| |||| 00| 0 eng d
024 _a125710
037 _cTextual
040 _aSDCL
_cSDCL
_beng
041 _2eng
_aeng
082 _aB24 N, K9
100 _aRellich Franz
_9439291
245 0 _aPerturbation theory of eigenvalue problems
260 _c1969
300 _ax,127p.
_ccm.
942 _hB24 N, K9
_cTEXL
_2CC
999 _c754981
_d754981