PISPINIS, DIMITRIOS. Calculation of minimum speed of projectiles under linear resistance using the geometry of the velocity space. European Journal of Physics Education, [S.l.], v. 10, n. 3, p. 1-9, july 2019. ISSN 1309-7202. Available at: <http://eu-journal.org/index.php/EJPE/article/view/234>. Date accessed: 18 aug. 2019.