Meenakshi Nagarajan Karthik Gomadam Amit P. Sheth Ajith Ranabahu Raghava Mutharaju Ashutosh Jadhav Spatio-Temporal-Thematic Analysis of Citizen Sensor Data: Challenges and Experiences. 539-553 2009 WISE http://dx.doi.org/10.1007/978-3-642-04409-0_52 conf/wise/2009 db/conf/wise/wise2009.html#NagarajanGSRMJ09