H-ACO: A Heterogeneous Ant Colony Optimisation Approach with Application to the Travelling Salesman Problem. - Ahamed Fayeez Tuani; Edward C. Keedwell; Matthew Collett (Artificial Evolution, 2017)

Investigating Behavioural Diversity via Gaussian Heterogeneous Ant Colony Optimization for Combinatorial Optimization Problems. - Ahamed Fayeez Tuani; Ed Keedwell; Matthew Collett (ICAAI, 2018)

Heterogenous Adaptive Ant Colony Optimization with 3-opt local search for the Travelling Salesman Problem. - Ahamed Fayeez Tuani; Edward C. Keedwell; Matthew Collett (Appl. Soft Comput., 2020)