1.- 70 MA NONMARINE DIATOMS FROM NORTHERN MEXICO GEOLOGICAL SOCIETY OF AMERICA (GSA); BOULDER, CO; USA; UNITED STATES, 2002 Ver registro 2.- ORIGIN OF LAMINATIONS IN TLAXCALA PALEOLAKE, MEXICO E. SCHWEIZERBART'SCHE VERLAGSBUCHHANDLUNG; STUTTGART; III; INTERNATIONAL, 1997 INTERNATIONAL ASSOCIATION OF THEORETICAL AND APPLIED LIMNOLOGY; PROCEEDINGS Ver registro 3.- The significance of modern diatoms as paleoenvironmental indicators along an altitudinal gradient in the Andean piedmont of central Argentina Elsevier; Amsterdam; NLD; Netherlands, 2013 Ver registro