Vargas-Canales, J.M. et al. 2019. Specialization and competitiveness of natural rubber (Hevea brasiliensis [Willd. ex A. Juss.] Müll. Arg.) production in Mexico. Revista Chapingo Serie Ciencias Forestales y del Ambiente. 25, 3 (Jul. 2019), 425–439. DOI:https://doi.org/10.5154/r.rchscfa.2018.12.092.