Working Group on: The artificial prolongation of life and the determination of the exact moment of death, October 19-21, 1985 / edited by Carlos Chagas. - Pontificia Accademia delle scienze. (OLS)http://pul/name/1110; Chagas, Carlos, 1910- (OLS)http://pul/name/1831 (ex aedibus Academicis, 1986)