Scalable, Secure Cash Payment for WWW Resources with the PayMe Protocol Set. - Michael Peirce; Donal O'Mahony (WWW (Fall), 1995)

Scalable, Secure, Cash Payment for WWW Resources with the PayMeProtocol Set. - Michael Peirce; Donal O'Mahony (World Wide Web J., 1996)

Electronic payment systems. - Donal O'Mahony; Michael Peirce; Hitesh Tewari (Artech House, 1997)

Flexible real-time payment methods for mobile communications. - Michael Peirce; Donal O'Mahony (IEEE Wirel. Commun., 1999)

Multi-Party Electronic Payments for Mobile Communications - Michael Peirce (2000)