On the oscillation of solutions and existence of positive solutions of neutral difference equations
1991 ◽
Vol 158
(1)
◽
pp. 213-233
◽
1998 ◽
Vol 36
(10-12)
◽
pp. 27-35
◽
2004 ◽
Vol 152
(2)
◽
pp. 351-366
◽
1992 ◽
Vol 166
(1)
◽
pp. 272-287
◽
1996 ◽
Vol 2
(2)
◽
pp. 175-183
◽
2002 ◽
Vol 17
(3)
◽
pp. 251-257
◽
1998 ◽
Vol 1998
(1)
◽
pp. 972628
◽