An Elementary Proof of the Existence of Solutions to Second Order Nonlinear Boundary Value Problems
1974 ◽
Vol 5
(4)
◽
pp. 701-707
◽
1993 ◽
Vol 22
(1-2)
◽
pp. 11-22
1980 ◽
Vol 73
(2)
◽
pp. 392-410
◽
Some nonlinear boundary value problems for nonlinear elliptic equations of second order in the plane
1985 ◽
Vol 4
(3)
◽
pp. 189-204
◽
2010 ◽
Vol 2010
◽
pp. 1-12
◽