A necessary and sufficient condition for the oscillation of neutral equations
1987 ◽
Vol 126
(2)
◽
pp. 341-354
◽
1990 ◽
Vol 32
(2)
◽
pp. 180-192
◽
1989 ◽
Vol 41
(4)
◽
pp. 575-588
◽
2017 ◽
Vol E100.A
(12)
◽
pp. 2764-2775
◽