E. Hoel, S. Menon, and S. Morehouse. Advances in Spatial and Temporal Databases, volume 2750 of Lecture Notes in Computer Science, Springer Berlin Heidelberg, (2003)
R. Bommakanti, K. Klotz, E. Dratz, and A. Jesaitis. J Leukoc Biol, 54 (6):
572-7(December 1993)Bommakanti, R K Klotz, K N Dratz, E A Jesaitis, A J R01 AI22735/AI/NIAID
NIH HHS/United States Research Support, Non-U.S. Gov't Research Support,
U.S. Gov't, P.H.S. United states Journal of leukocyte biology J Leukoc
Biol. 1993 Dec;54(6):572-7..
A. Lancichinetti, S. Fortunato, and J. Kertesz. (2008)cite arxiv:0802.1218
Comment: 20 pages, 8 figures. Final version published on New Journal of
Physics.