Kreuz, Carlos Leomar, Edgar Augusto Lanzer, and Quirino Paris. “The Von Liebig Production Functions With Decreasing Yields”. Pesquisa Agropecuaria Brasileira 30, no. 1 (January 1, 1995): 95–106. Accessed November 13, 2025. https://apct.sede.embrapa.br/pab/article/view/4280.