Creating reproducible publication quality graphics with R
a tutorialWuppertal : Bergische Univ. Wuppertal, 2015

Cross-functional coopetition in new product development: can constraints drive integration?
a case of the design–manufacturing interface of electrified carsWuppertal, [2019]
Customer confusion in multi-channel shoppers
is channel integration the answer?Wuppertal, October 2020
