A Multi-Tier Web Service and Mobile Client for City Trip Recommendations. - Christopher Laß; Wolfgang Wörndl; Daniel Herzog (MobiCASE, 2016)

Context-Aware Tourist Trip Recommendations. - Christopher Laß; Daniel Herzog; Wolfgang Wörndl (RecTour@RecSys, 2017)

Tourrec: a tourist trip recommender system for individuals and groups. - Daniel Herzog; Christopher Laß; Wolfgang Wörndl (RecSys, 2018)

Stager: Simplifying the Manual Assessment of Programming Exercises. - Christopher Laß; Stephan Krusche; Nadine von Frankenberg; Bernd Bruegge (SEUH, 2019)