Criteria for the Limit-Point Case for Second Order Linear Differential Operators
1949 ◽
Vol 074
(1)
◽
pp. 17-20
◽
Keyword(s):
Keyword(s):
2018 ◽
Vol 130
◽
pp. 213-228
◽
Keyword(s):
2020 ◽
Vol 51
(2)
◽
pp. 689-703