Second-Order Linear Ordinary Differential Equations
2007 ◽
Vol 38
(2)
◽
pp. 189-211
◽
1987 ◽
Vol 63
(4)
◽
pp. 98-101
1958 ◽
Vol 34
(5)
◽
pp. 229-234
◽
1984 ◽
Vol 101
(2)
◽
pp. 325-347
◽
1977 ◽
Vol 29
(1-2)
◽
pp. 88-102
◽
1964 ◽
Vol 18
(88)
◽
pp. 664-664
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