Existence and bifurcation for some elliptic problems on exterior strip domains. - Tsing-San Hsu (Int. J. Math. Math. Sci., 2006)

Multiple Positive Solutions for a Quasilinear Elliptic System Involving Concave-Convex Nonlinearities and Sign-Changing Weight Functions. - Tsing-San Hsu (Int. J. Math. Math. Sci., 2012)

Multiple solutions for a fractional Laplacian System involving Critical Sobolev-Hardy exponents and homogeneous Term. - Jinguo Zhang; Tsing-San Hsu (Math. Model. Anal., 2020)