KARČIAUSKAS, K.; KRASAUSKAS, R. Rational rolling ball blending of natural quadrics. Mathematical Modelling and Analysis, [S. l.], v. 5, n. 1, p. 97–107, 2000. DOI: 10.3846/13926292.2000.9637132. Disponível em: https://journals.vilniustech.lt/index.php/MMA/article/view/9948. Acesso em: 9 may. 2025.