Y. K. Chen and K. C. Chiou and C. Y. Chen, A Markov Chain Approximation for ATS Modeling for the Variable Sampling Interval CCC Control Charts. journal = {International Journal of Computer and Information Engineering}, [online]. World Academy of Science, Engineering and Technology. May 2009, vol. 29(5). 1248 - 1251 [viewed 19 March 2024]. Available from: https://publications.waset.org/pdf/13236.