Perturbation Theory for Degenerate Linear Systems
1985 ◽
Vol 2
(4)
◽
pp. 261-273
◽
2013 ◽
Vol 65
(2)
◽
pp. 328-340
◽
1998 ◽
Vol 13
(4)
◽
pp. 283-290
◽
Keyword(s):
1997 ◽
Vol 49
(9)
◽
pp. 1442-1463
◽
1974 ◽
Vol 15
(7)
◽
pp. 947-949
◽
Keyword(s):