Integrating GSTRBAC spatial constraints in X-GTRBAC. - Hammad Haseeb; Ammar Masood; Muataz Ahmed; Arif Ghafoor (FIT, 2009)

A Framework for Composition and Enforcement of Privacy-Aware and Context-Driven Authorization Mechanism for Multimedia Big Data. - Arjmand Samuel; Muhammad I. Sarfraz; Hammad Haseeb; Saleh M. Basalamah; Arif Ghafoor (IEEE Trans. Multim., 2015)