1. Positive solutions for semilinear Dirichlet problems in an annulus;Arcoya;J. diff. Eqns,1991
2. Nonlinear elliptic problems in annular domains;Bandle;J. diff. Eqns,1987
3. Semilinear elliptic problems in annular domains;Bandle;J. Appl. Phys. (ZAMP),1989
4. Global breaking of symmetry of positive solutions in two dimensional equations;Dancer;Differential and Integral Equations,1992
5. Existence of positive solutions for semilinear elliptic equations in annular domains;Dang;Differential and Integral Equations,1994