Subdifferentiability of Convex Functions with Values in an Ordered Vector Space. Jochem Zowe — 1974 Mathematica Scandinavica
Fenchel Type Duality Theorems in Finite Dimensional Ordered Vector Spaces. Jochem Zowe — 1972 Mathematica Scandinavica
Mechanical design problems with unilateral contact Michal Kočvara; Michael Zibulevsky; Jochem Zowe — 1998 ESAIM: Mathematical Modelling and Numerical Analysis - Modélisation Mathématique et Analyse Numérique