H. . Frenz and M. . Lappe, “Visual Distance Estimation in Static Compared to Moving Virtual Scenes”, Span. j. psychol., vol. 9, no. 2, pp. 321–331, Nov. 2006, Accessed: Nov. 18, 2024. Available: https://revistas.ucm.es/index.php/SJOP/article/view/SJOP0606220321A