Construction of Singular Solutions to the P-Harmonic Equation and its Limit Equation for P = ... . Gunnar Aronsson — 1986 Manuscripta mathematica
Represenation of a p-harmonic function near a critical point in the plane. Gunnar Aronsson — 1990 Manuscripta mathematica
On certain singular solutions of the partial differential equation... . Gunnar Aronsson — 1984 Manuscripta mathematica
Pontryagin's Maximum Principle and a Minimax Problem. Gunnar Aronsson — 1971 Mathematica Scandinavica