Distributed Management of OMA DRM Domains. - Harikrishna Vasanta; Reihaneh Safavi-Naini; Nicholas Paul Sheppard; Jan Martin Surminen (WISA, 2006)

Location constraints in digital rights management. - Adam Muhlbauer; Reihaneh Safavi-Naini; Farzad Salim; Nicholas Paul Sheppard; Jan Martin Surminen (Comput. Commun., 2008)