Aidi, K.; Butt, N. S.; Ali, M. M.; Ibrahim, M.; Yousof, H. M.; Shehata, W. A. M. A Modified Chi-Square Type Test Statistic for the Double Burr X Model With Applications to Right Censored Medical and Reliability Data. Pak.j.stat.oper.res. 2021, 17, 615-623.