Vázquez Bautista, G., Zapata Torres, M., Chalé-Lara, F., Meléndez Lira, M., Hernández Rodríguez, E. and Valaguez Velázquez, E. (2021) “Is sulfur the responsible for color of yellow Chiapas Amber?”, Superficies y Vacío, 34, p. 211201. doi: 10.47566/2021_syv34_1-211201.