Haruna Saleh and Tasi’u Yalwa Rilwanu, “Relationship between Rainfall Variability and Millet (Pennisetum americanum L.) and Sorghum (Sorghum bicolor (L) moench.) Yields in the Sudan Savanna Ecological Zone of Nigeria: A Modelling Approach”, CRAS-V10, pp. 66–76, Jun. 2021.