Graphical Evaluation of the Prediction Capabilities of Partially Replicated Orthogonal Central Composite Designs. - Eugene C. Ukaegbu; Polycarp E. Chigbu (Qual. Reliab. Eng. Int., 2015)

The efficiency and optimality characterization of certain six-Treatment incomplete-Block designs emanating from some quasi-Semi-Latin squares. - Polycarp E. Chigbu; Eugene C. Ukaegbu (Commun. Stat. Simul. Comput., 2019)