Enumeration of semi-Latin squares. - Rosemary A. Bailey; Polycarp E. Chigbu (Discret. Math., 1997)

On optimal control theory in marine oil spill management: A Markovian decision approach. - K. J. Bassey; Polycarp E. Chigbu (Eur. J. Oper. Res., 2012)

Optimal Detection and Estimation of Marine Oil Spills Through Coherent Pluralism. - Kufre Bassey; Polycarp E. Chigbu (Int. J. Oper. Res. Inf. Syst., 2013)

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)

An algorithm for the simultaneous construction of D -optimal experimental designs. - Ngozi C. Umelo-Ibemere; Polycarp E. Chigbu (Commun. Stat. Simul. Comput., 2023)