Felstead, Nicholas J., Gonzalez, Silvia, Huddart, David, Noble, Stephen R., Hoffmann, Dirk L., Metcalfe, Sarah E., Leng, Melanie J., Albert, Bruce M., Pike, Alistair W.G., Gonzalez-Gonzalez, Arturo, Jimenez-Lopez, Jose Concepcion, "Holocene-aged human footprints from the Cuatrociénegas Basin, NE Mexico", Journal of Archaeological Science, 2014