Reference: Vidigal, P., Romeiras, M. M., & Monteiro, F. (2019). Crop Diversification and the Role of Orphan Legumes to Improve the Sub-Saharan Africa Farming Systems. In M. Hasanuzzaman, M. C. M. T. Filho, M. Fujita, & T. A. R. Nogueira (Eds.), Sustainable Crop Production (chapter 3). InTechOpen.