UGBE, thomas adidaumbe; AKPAN, S.; OFEM, A. Application of Kuhn-Tucker Optimality Criteria in the Selection of Fertilizer Combination for Crop Optimal Yield. American Scientific Research Journal for Engineering, Technology, and Sciences, [S. l.], v. 14, n. 3, p. 279–288, 2015. Disponível em: https://asrjetsjournal.org/index.php/American_Scientific_Journal/article/view/1072. Acesso em: 3 may. 2024.