Amit Anil Nanavati Rahul Singh Dipanjan Chakraborty Koustuv Dasgupta Sougata Mukherjea Gautam Das Siva Gurumurthy Anupam Joshi Analyzing the Structure and Evolution of Massive Telecom Graphs. 703-718 2008 20 IEEE Trans. Knowl. Data Eng. 5 http://doi.ieeecomputersociety.org/10.1109/TKDE.2007.190733 db/journals/tkde/tkde20.html#NanavatiSCDMDGJ08