Moreira de Oliveira, Camylla, and Oldrich Joel Romero. 2021. “Approximate Calculation Model and Gibbs Model to Determine Operating Parameters of the Sucker-Rod Pumping System”. Latin American Journal of Energy Research 8 (1): 67-85. https://doi.org/10.21712/lajer.2021.v8.n1.p67-85.