Esar, S. E., Kamal, S. K., & Sherwani, R. A. K. (2017). Comparison of fractional splines with polynomial splines; An Application on under-five year’s child mortality data in Pakistan (1960-2012). Pakistan Journal of Statistics and Operation Research, 13(2), 439-448. https://doi.org/10.18187/pjsor.v13i2.1841