Electronic Journal of Differential Equations,
Vol. 2002(2002), No. 59, pp. 1-11.

Title: Positive solutions and nonlinear eigenvalue problems
       for retarded second order differential equations

Authors: G. L. Karakostas (Univ. of Ioannina, Greece)
 P. Ch. Tsamatos (Univ. of Ioannina, Greece)
         
Abstract: 
  We investigate the eigenvalues of a nonlocal boundary
  value problem for a second  order retarded differential equation.
  We provide information on norm estimates, uniqueness, and
  continuity of solutions.
  
Submitted March 27, 2002. Published June 21, 2002.
Math Subject Classifications: 34K10
Key Words: Nonlocal boundary value problems; positive solutions; 
    concave solutions; retarded second order differential equations.