Web communication services and the PacketIN® application hosting environment. - Yang Chen; Olivier B. Clarisse; Pascal Collet; Mark A. Hartman; Luciano Rodriguez; Lizette Velázquez; Bruce A. Westergren (Bell Labs Tech. J., 2002)

On new security mechanisms for identity management: Recognizing and meeting telecom operator and enterprise needs. - Igor Faynberg; Mark A. Hartman; Hui-Lan Lu; Douglas W. Varney (Bell Labs Tech. J., 2010)