Authors : Moorthy et.al.

Probability and Random Processes - 8th. Edn.

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Dr. M B K Moorthy, was the professor and Head of the  Department of mathematics at the Institute. of Road and Transport Technology. 

Dr. K. Subramani  former professor of Mathematics at Kumaraguru College of Technology, Coimbatore. 

Dr. A. Santha is an Associate Professor of Mathematicsat Kumaraguru College of Technology. Coimbatore.