Niyamosoth, T., Pathumnakul, S. and Prathumthip, S. (2016) “Production lot sizing problem with sudden obsolescence and machine breakdowns”, Engineering and Applied Science Research, 43, pp. 504–508. available at: https://ph01.tci-thaijo.org/index.php/easr/article/view/72628 (accessed: 29 September 2026).