Yuan Qiu, Tadashi Ohmori, Takahiko Shintani, Hideyuki Fujita. Pairwise Expansion: A New Topdown Search for mCK Queries Problem over Spatial Web. In Feifei Li 0001, Kyuseok Shim, Kai Zheng, Guanfeng Liu, editors, Web Technologies and Applications - 18th Asia-Pacific Web Conference, APWeb 2016, Suzhou, China, September 23-25, 2016. Proceedings, Part II. Volume 9932 of Lecture Notes in Computer Science, pages 459-463, Springer, 2016. [doi]