SZIRMAY-KALOS, László. Filtering and Gradient Estimation for Distance Fields by Quadratic Regression. Periodica Polytechnica Electrical Engineering and Computer Science, [S. l.], v. 59, n. 4, p. 175–180, 2015. 10.3311/PPee.8529. Disponível em: https://www.pp.bme.hu/eecs/article/view/8529. Acesso em: 3 may. 2024.