%0 Journal Article %T Existence and Nonexistence of Positive Solutions for Singular -Laplacian Equation in %A Chen Caisheng %A Wang Zhenqi %A Wang Fengping %J Boundary Value Problems %D 2010 %I Springer %X We study the existence and nonexistence of solutions for the singular quasilinear problem , , , , , where , and behave like and with at the origin. We obtain the existence by the upper and lower solution method and the nonexistence by the test function method. %U http://www.boundaryvalueproblems.com/content/2010/607453