Lexicographic sums and fibre-faithful maps. - Reinhard Börger; Walter Tholen; Anna Tozzi (Appl. Categorical Struct., 1993)

Editorial. - Reinhard Börger (Appl. Categorical Struct., 1994)

Cogenerators for convex spaces. - Reinhard Börger; Ralf Kemper (Appl. Categorical Struct., 1994)

A cogenerator for preseparated superconvex spaces. - Reinhard Börger; Ralf Kemper (Appl. Categorical Struct., 1996)

Joins and Meets of Symmetric Idempotents. - Reinhard Börger (Appl. Categorical Struct., 2007)