Motivated by recent antitrust cases, a hub-and-spoke collusive mechanism involving multiple downstream firms and their common upstream supplier is explored. To this end, I develop a repeated sequential game in which downstream firms receive private demand signals and send private messages to the...

We introduce a novel multimodal (ground and air transportation) network design model with transshipments for the transport of express cargo with heterogeneous service classes (i.e., next morning delivery, and next day delivery). We formulate this problem using a novel path-based mixed-integer...