KURZ, G.; GILITSCHENSKI, I.; PFAFF, F.; DRUDE, L.; HANEBECK, U. D.; HAEB-UMBACH, R.; SIEGWART, R. Y. Directional Statistics and Filtering Using libDirectional. Journal of Statistical Software, [S. l.], v. 89, n. 4, p. 1–31, 2019. DOI: 10.18637/jss.v089.i04. Disponível em: https://www.jstatsoft.org/index.php/jss/article/view/v089i04. Acesso em: 7 jul. 2022.