WASET
    Rita SahaRay and  Ganesh Dutta,  On the Optimality of Blocked Main Effects Plans.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology.
    October 2016, vol. 119(11). 583 - 586
    [viewed 23 April 2024]. Available from: https://publications.waset.org/pdf/10005831.