WERT, Travis; BRAKE, Danielle. 3D Printing Solid Mobius Strips. Minnesota Journal of Undergraduate Mathematics, [S.l.], v. 5, n. 1, july 2019. ISSN 2378-5810. Available at: <https://mjum.math.umn.edu/index.php/mjum/article/view/62>. Date accessed: 20 oct. 2020.