“…(2) With the exception of a few, for example, [1,3], most of the results on the existence of solutions to multipoint boundary value problems are based upon fixed-point theorems of Krasnoselskii's type; see Krasnoselskii [2], Guo and Lakshmikantham [19], and recent articles of Ma [12,14,20], Liu [18], and Sun et al [13]. Other methods in nonlinear functional analysis such as Leray-Schauder continuation theorem, nonlinear alternative of Leray-Schauder fixed point theorem, and coincidence degree theory have also been used, see Mawhin [21,22].…”