Ortega-Guerrero, Beatriz, et al. “Paleoambiental Reconstruction of the Xochimilco Sub-Basin, Central Mexico, Between 18000 and 5000 Years Cal before Present”. Revista Mexicana De Ciencias Geológicas, vol. 35, no. 3, Nov. 2018, pp. 254-67, doi:10.22201/cgeo.20072902e.2018.3.779.