Author: Lü, Haishen

Lü, Haishen; O'Regan, Donal; Agarwal, Ravi P.: Existence to singular boundary value problems with sign changing nonlinearities using an approximation method approach. (English). Applications of Mathematics, vol. 52 (2007), issue 2, pp. 117-135
Lü, Haishen; O'Regan, Donal; Agarwal, Ravi P.: On the existence of multiple periodic solutions for the vector $p$-Laplacian via critical point theory. (English). Applications of Mathematics, vol. 50 (2005), issue 6, pp. 555-568