For such activity diverse analytical and empirical methods were employed, that were developed at an international level, which were found in Wei-Xin, et al., 2005, Byeong, et al., 2007, among others.
Para dicho trabajo se emplearon diversos métodos analíticos y empíricos desarrollados a nivel internacional, los cuales se encontraron en: Wei-Xin, et al., 2005, Byeong, et al., 2007, entre otros.