Aznar Casanova J. A. ., Matsushima E. H., Da Silva J. A. y Ribeiro Filho N. P. (2006). Distance perception in a natural outdoor setting: is there a developmental trend to overconstancy?. The Spanish Journal of Psychology, 9(2), 285-294. https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0606220285A