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Singular boundary value problems for superlinear second order ordinary and delay differential equations
(Elsevier BV, 1996-09-01)
Second-order boundary value problems of singular type
(Elsevier BV, 1998-10-01)
Multiple solutions for the dirichlet second-order boundary value problem of nonsingular type
(Elsevier BV, 1999-04-01)
Nonlinear superlinear singular and nonsingular second order boundary value problems
(Elsevier BV, 1998-02-01)
Positive solutions to singular initial value problems with sign changing nonlinearities
(Elsevier BV, 1998-08-01)
A general existence principle for strong solutions to the dirichlet problem for the equation δ u + f(t, u) = 0
(Elsevier BV, 1997-05-01)
An existence principle is established for Delta u + f(t, u) = 0 on Omega, u = 0 on partial derivative Omega. Our theory relies on a fixed point result for weakly sequentially continuous and weakly compact maps.
Nonresonant nonlinear singular problems in the limit circle case
(Elsevier BV, 1996-02-01)
Integral inclusions of upper semi-continuous or lower semi-continuous type
(American Mathematical Society (AMS), 1996-08-01)
Topological results for set valued maps are used to establish existence results for integral inclusions of Volterra or Hammerstein type.
Positive solutions of singular and nonsingular fredholm integral equations
(Elsevier BV, 1999-12-01)
Periodic solutions for abstract operator equations
(Elsevier BV, 1999-07-01)