ver Loren van Themaat, T., C. S. Schutte, E. Lutters, and D. Kennon. “Designing A Framework To Design A Business Model For The ’Bottom Of The Pyramid’ Population”. The South African Journal of Industrial Engineering, vol. 24, no. 3, Nov. 2013, pp. 190-04, doi:10.7166/24-3-633.