H. Amann 

Vectorvalued parabolic equations 
H. Brezis 

Is there failure of the inverse function
theorem? 
G. Da Prato 

Some result on elliptic and parabolic equations with infinitely many variables 
D.G. de Figueiredo 

A class of nonvariational elliptic systems 
J.P. Gossez 

On the Fucik
spectrum of the pLaplacian 
H.Ch. Grunau 

Nonlinear elliptic and parabolic problems of higher order 
J. Hulshof 

Travelling wave solutions for a 4th order reaction diffusion
equation 
E. Mitidieri 

Sharp nonexistence results for quasilinear elliptic and parabolic inequalities 
M. Plum 

Computerassisted existence proofs for semilinear elliptic boundary value problems 
S.I. Pohozaev 

Positive solutions to nonlinear Neumann
problems; application of the fibering method 
P.H. Rabinowitz 

Heteroclinic solutions of a Hamiltonian system on the 2torus 
J. Serrin 

Radial symmetry of positive global solutions of quasilinear elliptic
equations in R^n. 