Christos Tsiaras, Burkhard Stiller: Challenging the Monopoly of Mobile Termination Charges with an Auction-based Charging and User-centric System (AbaCUS); Networked Systems (NetSys) 2013, "Innovations in the Realm of Networked Systems", Stuttgart, Germany, March 2013, ISBN 978-1-4673-5645-9, pp 110-117. doi:10.1109/NetSys.2013.13 URL: http://ieeexplore.ieee.org/xpl/abstractAuthors.jsp?reload=true&arnumber=6529243.