J. E. Both, M. T. Leite, L. M. Hildebrandt, M. Beuter, e G. E. Grosmann, “PERCEPTION OF OLD AGE IN THE VOICE OF OLDER PEOPLE PLACED IN GROUPS OF THE ELDERLY”, Rev. Pesqui. (Univ. Fed. Estado Rio J., Online), vol. 4, nº 4, p. 3043–3051, nov. 2012.