A TREATMENT OF STURM-LIOUVILLE EIGENVALUE PROBLEMS VIA PICONE'S IDENTITY
1987 ◽
Vol 38
(6)
◽
pp. 813-838
◽
2001 ◽
Vol 31
(3)
◽
pp. 1039-1054
◽
2020 ◽
Vol 30
(3)
◽
pp. 033137
◽
1999 ◽
Vol 99
(2-3)
◽
pp. 153-166
◽
1996 ◽
Vol 204
(1)
◽
pp. 74-101
◽
1984 ◽
Vol 98
(1-2)
◽
pp. 69-88
◽