Two-Point Boundary Value Problems for Essentially Singular Second-Order Linear Differential Equations
1968 ◽
Vol 48
(6)
◽
pp. 415-418
◽
1999 ◽
pp. 144-196
1993 ◽
Vol 175
(2)
◽
pp. 342-359
◽
1973 ◽
Vol 6
(4)
◽
pp. 603-606
1986 ◽
Vol 17
(2)
◽
pp. 422-450
◽