Thomas Mba Akabzaa, University of Ghana, Ghana Bonnie Campbell, University of Quebec in Montreal, Canada Didier de Failly, Bureau d'Etudes Scientifiques et Techniques, Democratic Republic of the Congo Saël Gagné-Ouellet, University of Quebec in Montreal, Canada Gavin Hilson, University of Surrey, UK John Jacobs, Carleton University, Canada Zacharie Bulakali Ntakobajira, Bureau d'Etudes Scientifiques et Techniques, Democratic Republic of the Congo Godfried Okoh, Ghana Revenue Service, Ghana Lucien Bahimba Shonja, Bureau d'Etudes Scientifiques et Techniques, Democratic Republic of the Congo