1. Existence and uniqueness of coexistence states for the predator-prey model with diffusion: the scalar case;López-Gómez;Diff. and Int. Eqns.,1993
2. On the spectrum of some linear noncooperative elliptic systems with radial symmetry;Dancer;Diff. Int. Eqns.,1994
3. The principal eigenvalue and maximum principal for second order elliptic operators in general domains;Berestycki;Comm. Pure Appl. Maths.,1994
4. On linear weighted boundary value problems;López-Gómez,1994
5. The maximum principle for cooperative weakly coupled elliptic systems and some applications;López-Gómez;Diff. and Int. Eqns.,1994