Chanon Kamnuansak และ Somchai Pathomsiri. (2011) Development of mathematical models for routing and scheduling police patrol service. Mahidol University:ม.ป.ท.Chanon Kamnuansak และ Somchai Pathomsiri. 2011. Development of mathematical models for routing and scheduling police patrol service. ม.ป.ท.:Mahidol University;Chanon Kamnuansak และ Somchai Pathomsiri. Development of mathematical models for routing and scheduling police patrol service. ม.ป.ท.:Mahidol University, 2011. Print.