Szpilman, A. R. M., and A. E. Oliveira. “The user’s Perception on the Dentistry Health Services in Health Unities in Vila Velha (ES), Brazil”. Espaço Para a Saúde, vol. 12, no. 2, Aug. 2011, pp. 28-37, doi:10.22421/15177130-2011v12n2p28.