A non-Hausdorff quaternion multiplication. - Keith A. Hardie; S. Salbany; J. J. C. Vermeulen; Peter J. Witbooi (Theor. Comput. Sci., 2003)

A 2-groupoid Characterisation of the Cubical Homotopy Pushout. - Keith A. Hardie; Klaus Heiner Kamps; Peter J. Witbooi (Appl. Categorical Struct., 2004)

Finite relational structure models of topological spaces and maps. - Keith A. Hardie; Peter J. Witbooi (Theor. Comput. Sci., 2008)

A Coherent Homotopy Category of 2-track Commutative Cubes. - Keith A. Hardie; Klaus Heiner Kamps; Peter J. Witbooi (Appl. Categorical Struct., 2011)

A reliable numerical method to price arithmetic Asian options. - Walter Mudzimbabwe; Kailash C. Patidar; Peter J. Witbooi (Appl. Math. Comput., 2012)

Modeling the Dynamics of an Epidemic under Vaccination in Two Interacting Populations. - Ibrahim H. I. Ahmed; Peter J. Witbooi; Kailash C. Patidar (J. Appl. Math., 2012)

The Fibre of a Pinch Map in a Model Category. - Keith A. Hardie; Peter Joseph Witbooi (Appl. Categorical Struct., 2013)

An Optimal Portfolio and Capital Management Strategy for Basel III Compliant Commercial Banks. - Grant E. Muller; Peter J. Witbooi (J. Appl. Math., 2014)

Vaccination Control in a Stochastic SVIR Epidemic Model. - Peter J. Witbooi; Grant E. Muller; Garth J. Van Schalkwyk (Comput. Math. Methods Medicine, 2015)

Prediction of human-Bacillus anthracis protein-protein interactions using multi-layer neural network. - Ibrahim Ahmed 003; Peter J. Witbooi; Alan Christoffels (Bioinform., 2018)

A Stochastic TB Model for a Crowded Environment. - Sibaliwe Maku Vyambwera; Peter J. Witbooi (J. Appl. Math., 2018)

Modeling the Effects of Vaccination and Treatment on Tuberculosis Transmission Dynamics. - Ashenafi Kelemu Mengistu; Peter J. Witbooi (J. Appl. Math., 2019)

Tuberculosis in Ethiopia: Optimal Intervention Strategies and Cost-Effectiveness Analysis. - Ashenafi Kelemu Mengistu; Peter J. Witbooi (Axioms, 2022)