SKOS-Based Concept Expansion for LOD-Enabled Recommender Systems. - Lisa Wenige; Geraldine Berger; Johannes Ruhland (MTSR, 2018)

Skill Systems as Expansion in Serious Games for Game-Based Learning. - Geraldine Anna Berger; Giga Tskhvedadze; Johannes Ruhland (iLRN, 2022)