V. L. ANDRADE, P. C. SABROZA, A. J. W. de CASTROS, C. P. MOTTA, e A. J. ARAUJO, “Leprosy spread in urban area, part II: reactivity of Soluble Antigen (SA) in three different groups of leprosy contacts in São Gonçalo Rio de Janeiro State Brazil”, Hansen. Int., vol. 15, nº 1/2, p. 46–57, nov. 1990.