Spectral properties of ordinary differential operators admitting special decompositions
1979 ◽
Vol 68
(1)
◽
pp. 68-91
◽
1970 ◽
Vol 69
(1)
◽
pp. 77-84
2003 ◽
Vol 133
(4)
◽
pp. 893-917
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2019 ◽
Vol 484
(1)
◽
pp. 12-17
◽
2002 ◽
Vol 10
(6)
◽
2018 ◽
Vol 482
(5)
◽
pp. 500-503
◽
1978 ◽
Vol 82
(1-2)
◽
pp. 117-134
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