The Snowden Phone: A Comparative Survey of Secure Instant Messaging Mobile Applications (authors' version). - Christian Johansen; Aulon Mujaj; Hamed Arshad; Josef Noll (CoRR, 2018)

The Snowden Phone: A Comparative Survey of Secure Instant Messaging Mobile Applications. - Christian Johansen; Aulon Mujaj; Hamed Arshad; Josef Noll (Secur. Commun. Networks, 2021)