Colonnese, Fabio. “The Geometry of Vision: Hermann Maertens’ Optical Scale for a Deterministic Architecture”. ZARCH. Journal of interdisciplinary studies in Architecture and Urbanism, no. 9 (December 4, 2017): 60–73. Accessed January 23, 2026. https://papiro.unizar.es/ojs/index.php/zarch/article/view/2263.