K. ARAP TONUI, Mathew; W. MWANGI, Isaac; WANJAU, Ruth. Recovery of Zn2+, Fe2+ and Mn2+ from Some Selected Edible Vegetables and Pumpkin using Modified Maize Cobs. American Scientific Research Journal for Engineering, Technology, and Sciences, Jordan, v. 51, n. 1, p. 86–102, 2019. Disponível em: https://asrjetsjournal.org/American_Scientific_Journal/article/view/4602. Acesso em: 20 sep. 2025.