FILEMON, E. HOW TO DRAW A TANGENT TO ANY POINT OF THE CENTER POINT CURVE Periodica Polytechnica Mechanical Engineering, [S. l.], v. 13, n. 1, p. 1–8, 1969. Disponível em: https://pp.bme.hu/me/article/view/6128. Acesso em: 19 may. 2024.