https://www.universitycube.net/urlref/https%3A%2F%2Fscholarlypublishingcollective.org%2Fpsup%2Frals%2Farticle-pdf%2Fdoi%2F10.5325%2Fresoamerlitestud.37.2014.0365%2F1462815%2Fresoamerlitestud_37_2014_365.pdf