Design and analysis of data structures for querying image databases. - Yuelong Gu; Brajendra Panda; Kazi Asharful Haque (SAC, 2001)

Similarity between Euclidean and cosine angle distance for nearest neighbor queries. - Gang Qian; Shamik Sural; Yuelong Gu; Sakti Pramanik (SAC, 2004)