R. A. Banegas Rivero, M. A. Nuñez Ramirez, J. Salas Vargas, L. F. Escobar Caba, and S. Valdez del Río, “Landlocked Countries, Natural Resources and Growth: The Double Economic Curse Hypothesis”, IJEEP, vol. 9, no. 5, pp. 113–124, Jul. 2019.