PENKAUSKAS, A. The perception performance of visual signal stimuli when their density is changing. Psichologija, [S. l.], v. 7, p. 35–47, 1965. DOI: 10.15388/Psichol.1965.7.8908. Disponível em: https://www.journals.vu.lt/psichologija/article/view/8908.. Acesso em: 6 jul. 2024.