Srinivasan, A, and V Vasudevan. 2013. “A Stochastic Model on the Mean Time to Recruitment for a Two Graded Manpower System Associated With a Univariate Policy of Recruitment Involving Combined Thresholds Using Same Geometric Process for Inter-Decesion Times”. Recent Research in Science and Technology 4 (12). https://updatepublishing.com/journal/index.php/rrst/article/view/993.