PERTURBATION THEORY AND LIE ALGEBRAS

[51] PUTMAN CR, 1958, P AM MATH SOC, V9, P360

[52] PUTNAM C, 1958, T AM MATH SOC, V87, P513

[53] Putnam C.R., 1956, P AM MATH SOC, V7, P1026

[54] Putnam Calvin R., 1951, AM J MATH, V73, P127

[55] Disturbance theory of spectral decomposition. IV. [J]. MATHEMATISCHE ANNALEN, 1940, 117 : 356 - 382

[56] Perturbation theory of spectral decomposition. III Announcement. Analysis of non-essential limited perturbation. [J]. MATHEMATISCHE ANNALEN, 1939, 116 : 555 - 570

[57] Rellich F., 1940, MATH ANN, V118, P462

[58] RELLICH F, 1936, MATH ANN, V113, P600

[59] RELLICH F, 1936, MATH ANN, V113, P677

[60] ROSENBLOOM M, 1956, B AM MATH SOC, V62, P30

[51] PUTMAN CR, 1958, P AM MATH SOC, V9, P360

[52] PUTNAM C, 1958, T AM MATH SOC, V87, P513

[53] Putnam C.R., 1956, P AM MATH SOC, V7, P1026

[54] Putnam Calvin R., 1951, AM J MATH, V73, P127

[55] Disturbance theory of spectral decomposition. IV. [J]. MATHEMATISCHE ANNALEN, 1940, 117 : 356 - 382

[56] Perturbation theory of spectral decomposition. III Announcement. Analysis of non-essential limited perturbation. [J]. MATHEMATISCHE ANNALEN, 1939, 116 : 555 - 570

[57] Rellich F., 1940, MATH ANN, V118, P462

[58] RELLICH F, 1936, MATH ANN, V113, P600

[59] RELLICH F, 1936, MATH ANN, V113, P677

[60] ROSENBLOOM M, 1956, B AM MATH SOC, V62, P30