Yousof, H. M., Afify, A. Z., Ebraheim, A. E. H. N., Hamedani, G. G. and Butt, N. S. (2016) “On Six-Parameter Frechet Distribution: Properties and Applications”, Pakistan Journal of Statistics and Operation Research, 12(2), pp. 281-299. doi: 10.18187/pjsor.v12i2.1327.