Madhusoodhanan, P. ., P. . Sekar, and R. . Ramanarayanan. “GENERAL PRODUCTION AND SALES SYSTEM WITH SCBZ MACHINE TIME AND MARKOVIAN MANPOWER”. Journal of Reliability and Statistical Studies, vol. 9, no. 01, June 2016, pp. 29-45, https://journals.riverpublishers.com/index.php/JRSS/article/view/21021.