A new approach to process top-k spatial preference queries in a directed road network. - Muhammad Attique 001; Rizwan Qamar; Hyung-Ju Cho; Tae-Sun Chung (MobiGIS, 2014)

A Pruning Algorithm for Reverse Nearest Neighbors in Directed Road Networks. - Rizwan Qamar; Muhammad Attique 001; Tae-Sun Chung (Int. J. Networked Distributed Comput., 2015)