1. Baden-Württemberg State Ministry. (2020). Home to commerce and industry. Retrieved from www.baden-wuerttemberg.de/en/our-state/business-location/
2. Antecedents of conflict in marketing’s cross-functional relationship with sales;European Journal of Marketing,2005
3. Gimpel, H., & Röglinger, M. (2015). Digital transformation: Changes and chances – Insights based on an empirical study. Project Group Business and Information Systems Engineering (BISE) of the Fraunhofer Institute for Applied Information Technology FIT, Augsburg/Bayreuth Retrieved from www.fim-rc.de/wp-content/uploads/Fraunhofer-Studie_Digitale-Transformation.pdf