1. R. Abbadasari, R. Mukkamala, V. Valli Kumari, Mobicoin: digital cash for m-commerce. in First International Conference Distributed Computing and Internet Technology (ICDCIT 2004) (2004), pp. 441–451
2. A. Ali, A study of security in wireless and mobile payments. Master’s thesis, Department of Electrical Engineering, Linköping University (2010)
3. L. Antovski, M. Gusev, M-payments, in 25th International Conference on Information Technology lnferfaces (ITI 2003) (2003)
4. N. Asokan, P.A. Janson, M. Steiner, M. Waidner, The state of the art in electronic payment systems. IEEE Comput. 30(9), 28–35 (1997)
5. R. Byler, What is money? in 2nd Annual Conference on Mid–South College Computing (MSCCC 2004) (2004), pp. 200–209