Velásquez, S.M. and Giraldo, D.H. 2014. Characterization and evaluation of vulcanization time for colombian natural rubber from three hevea brasiliensis tree clones. Ingeniería y Competitividad. 16, 2 (Dec. 2014), 225–233. DOI:https://doi.org/10.25100/iyc.v16i2.3697.