Proper solutions and limit boundary value problems of nonlinear second-order systems of differential equations
2012 ◽
Vol 46
(3)
◽
pp. 559-593
◽
2000 ◽
Vol 248
(2)
◽
pp. 333-347
◽
1988 ◽
Vol 8
(3)
◽
pp. 239-248
◽
1998 ◽
Vol 97
(2)
◽
pp. 455-470
◽
1997 ◽
Vol 28
(6)
◽
pp. 983-997
◽
2015 ◽
Vol 195
(3)
◽
pp. 741-756
◽