@article{BMMS_2013_36_3_a21,
     author = {Chang-Mu Chu and Chun-Lei Tang},
     title = {Multiple {Results} for {Critical} {Quasilinear} {Elliptic} {Systems} {Involving} {Concave-Convex} {Nonlinearities} and {Sign-Changing} {Weight} {Functions}},
     journal = {Bulletin of the Malaysian Mathematical Society},
     year = {2013},
     volume = {36},
     number = {3},
     url = {http://geodesic.mathdoc.fr/item/BMMS_2013_36_3_a21/}
}