+@ARTICLE{Ammari01,
+ author = "Habib M. Ammari and Sajal K. Das",
+ title = "Scheduling protocols for homogeneous and heterogeneous k-covered wireless sensor networks",
+ YEAR = {2011},
+ JOURNAL = {Pervasive and Mobile Computing},
+ VOLUME = {7},
+ NUMBER = {1},
+ PAGES = {79-97},
+ }
+
+@book{Akyildiz02,
+ author = {Ian F. Akyildiz and Mehmet Can Vuran},
+ title = {Wireless Sensor Networks},
+ year = {2010},
+ isbn = {},
+ publisher = {John Wiley and Sons Ltd.},
+ address = {},
+}
+
+@book{Sudip03,
+ author = {Sudip Misra, Isaac Woungang and Subhas Chandra Misra},
+ title = {Guide to Wireless Sensor Networks},
+ year = {2009},
+ isbn = {},
+ publisher = {Springer-Verlag London Limited},
+ address = {},
+}
+
+@book{Nayak04 ,
+ author = {Amiya Nayak and Ivan Stojmenovic},
+ title = {Wireless Sensor and Actuator Networks: Algorithms and Protocols for Scalable Coordination and Data Communication},
+ year = {2010},
+ isbn = {},
+ publisher = {John Wiley and Sons, Inc},
+ address = {},
+}
+
+
+@ARTICLE{Misra05,
+ author = "S. Misra, M.P. Kumar and M.S. Obaidat",
+ title = "Connectivity preserving localized coverage algorithm for area monitoring using wireless
+sensor networks",
+ YEAR = {2011},
+ JOURNAL = {Computer Communications},
+ VOLUME = {34},
+ NUMBER = {12},
+ PAGES = {1484-1496},
+ }
+
+