Best constants in the Harnack inequality for the Weinstein equation. Heinz Leutwiler — 1987 Aequationes mathematicae
Beiträge zum potentialtheoretischen Aspekt des Verheftungssatzes von A.D. Alexandrow. Heinz Leutwiler — 1970 Commentarii mathematici Helvetici
Painlevé' s Theorem and the Phragmén-Lindelöf Maximum Principle. Heinz Leutwiler; Maynard Arsove — 1971 Mathematische Zeitschrift
A Unified Theory of Harmonic Measures and Capacitary Potentials. Heinz Leutwiler; Maynard Arsove — 1983 Mathematische Zeitschrift
On a quasilinear elliptic equation and a Riemannian metric invariant under Möbius transformations. Heinz Leutwiler; Catherine Bandle — 1991 Aequationes mathematicae
A Potential-Theoretic Approach to Parallel Addition. Heinz Leutwiler; Sirkka-Liisa Eriksson — 1986 Mathematische Annalen