"The Language of the March: Arctic to the Amazon." Indigenous Rights, Dialogy and Relations to National States, 51st International Congress of the Americanistas. Santiago, Chile. July 17, 2003
"Cultural Preservation and Cultural Exchange." TGDS. Tzulhuhil language radio station's conference room. http://interconnection.org/cmcm/clases.html. Guatemala. 1998
"Cultural Exchange Among Indigenous Women." Centre de la Salud. Panajachel, Guatemala. 1998
“Processor Tradicionais Para A Resolucao Das Disputas,” Seminario, Grupo de Estudos em Relacoes Interetnicas, Anthropology Department, Universidade de Brasilia, Brasilia, Brazil. Lecture translated from English into Brasilian Portuguese. 1999