1962, Proc. Symp. Appl. Math., 13, 199, 10.1090/psapm/013/0152231
1970, J. Math. Phys., 11, 364, 10.1063/1.1665149
1967, Comptes-Rendus, 265, 63
1971, Comptes-Rendus, 272, 330
1972, J. Math. Phys., 13, 1912, 10.1063/1.1665932
1962, Nuovo Cimento, 26, 1
1964, Proc. Symp. Appl. Math., 16, 145, 10.1090/psapm/016/0178638
1963, J. Math. Phys., 4, 174, 10.1063/1.1703941
1973, Physica, 65, 303, 10.1016/0031-8914(73)90347-9
1963, J. Math. Phys., 4, 852, 10.1063/1.1724328
1972, Indiana U. Math. J., 21, 815, 10.1512/iumj.1972.21.21065
1966, Theor. Prob. Appl., 11, 390, 10.1137/1111038
1961, J. Math. Phys., 2, 124, 10.1063/1.1724206
1972, Lecture Notes in Physics, 12, 148, 10.1007/3-540-05716-1_9
1971, Ann. Geophys. (Paris), 27, 151
1954, J. Phys. Soc. Japan, 9, 316, 10.1143/JPSJ.9.316
1954, J. Phys. Soc. Japan, 9, 935, 10.1143/JPSJ.9.935
1966, Can. J. Phys., 44, 2519, 10.1139/p66-206
1971, J. Quant. Spectrosc. Radiat. Transfer, 11, 1767, 10.1016/0022-4073(71)90021-5
1973, Astron. and Astrophys., 29, 93
1971, J. Quant. Spectrosc. Radiat. Transfer, 11, 1753, 10.1016/0022-4073(71)90020-3
1968, Phys. Rev., 174, 351, 10.1103/PhysRev.174.351
1970, J. Math. Phys., 11, 2348, 10.1063/1.1665402
1970, J. Math. Phys., 11, 2361, 10.1063/1.1665403
1973, Physica, 66, 403, 10.1016/0031-8914(73)90339-X
1972, J. Plasma Phys., 8, 217, 10.1017/S0022377800007091
1971, SIAM J. Appl. Math., 21, 287, 10.1137/0121032
1971, SIAM J. Appl. Math., 21, 13, 10.1137/0121002
1971, Commun. Pure Appl. Math., 24, 473, 10.1002/cpa.3160240403
