GRÖTSCHEL, M.; HANCHE-OLSEN, H.; HOLDEN, H.; KRYSTEK, M. P. On Angular Measures in Axiomatic Euclidean Planar Geometry. Measurement Science Review, [S. l.], v. 22, n. 4, p. 152–159, 2022. DOI: 10.2478/msr-2022-0019. Disponível em: https://journals.savba.sk/index.php/msr/article/view/1295. Acesso em: 5 may. 2024.