in december 1977, sisters alice and léonie, along with the mothers of the plaza de mayo and other human rights activists, prepared a request for the names of those who disappeared and for the government to divulge their whereabouts. the reply was publicized in the newspaper "la nación" on december 10, 1977, the same day alice domon disappeared. the name gustavo niño was found among the signatures as a false name, used in may by navy captain alfredo astiz, to infiltrate the mothers of the plaza de mayo.