et. al., Vikas Modgil,. 2021. “Mathematical Modeling and Time Dependent Availability Analysis of Poly - Ethylene Terephthalate Bottle Hot Drink Filling System: A Case Study”. Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12 (10):1822-29. https://turcomat.org/index.php/turkbilmat/article/view/4654.