We investigate whether revenue-maximizing auctioneers selling heterogeneous items will allow for combinatorial bidding in the presence of auctioneer competition. We compare the choice of auction format by two competing auctioneers with that of a single auctioneer. Bidders are heterogeneous in...

This book deals with the electronic procurement of transportation services. It provides an overview of the fundamentals for the procurement of transportation services, including the relevant objectives, involved parties, and processes. A focus is set on Electronic Transportation Marketplaces...

The German law to combat VAT fraud and other tax regulations went into force recently. The German legislator aims to enforce German VAT law via a liability of platform operators (like Amazon and eBay). The consequences of this regulatory approach are a) that platform operators enforce the law...

The German federal government presented a legislative proposal on tax- and especially VAT law with the focus to combat VAT fraud in (international) ecommerce on July 31st 2018. This draft legislation is explained and discussed.