系数变号的半线性椭圆方程的正解

马如云, 姚庆六, 李宝麟

Positive Solutions of a Semilinear Elliptic Equation with Coefficient That Changes Sign

MA Ru-yun, YAO Qing-liu, LI Bao-lin

数学季刊 . 2002, (4): 10 -14 .