Raza, Syed Muhammad Muslim, Maqbool Hussain Sial, Muhammad Haider, and Muhammad Moeen Butt. 2019. “HYBRID EXPONENTIALLY WEIGHTED MOVING AVERAGE (HEWMA) CONTROL CHART BASED ON EXPONENTIAL TYPE ESTIMATOR OF MEAN”. Journal of Reliability and Statistical Studies 12 (02):187-98. https://doi.org/10.13052/jrss2229-5666.12214.