Maximizing coverage quality using minimum number of nodes in clustered directional sensor networks / Selina Sharmin. Sharmin, Selina Communications network architecture 004.65 SHM Thesis (Ph.D) - - Department of Computer Science and Engineering, University of Dhaka, Session : 2016-2017.”. Bibliography: p. 105-118 Dhaka : University of Dhaka, 2017 2017 2017 Text [4], xiii, 126 p. : eng