2021 Bijmolt, T., Broekhuis, M., de Leeuw, S., Hirche, C., Rooderkerk, R., Sousa, R., Zhu, S. (2021), “Challenges at the Marketing–Operations interface in omni-channel retail environments“, Journal of Business Research. Castro, S.B.S.D., Correia-da-Silva, J. & Gaspar, J.M. (2021). Economic geography meets Hotelling: the home-sweet-home effect. Economic Theory.