Morphological evolution of la Concepcion valley by Huge mass movements on plateau edges in the eastern part of the mexican volcanic belt (Xalapa, Veracruz, Mexico)
Wassmer Patrick et al., Morphological evolution of la Concepcion valley by Huge mass movements on plateau edges in the eastern part of the mexican volcanic belt (Xalapa, Veracruz, Mexico), Acta vulcanologica AV. Acta vulcanologica , 16(1-2), 2004, pp. 125-132