YAVAS, Pervin Unlu; KIZILCIK, Hasan Sahin. Pre-Service Physics Teachers’ Difficulties in Understanding Special Relativity Topics. European Journal of Physics Education, [S.l.], v. 7, n. 1, p. 13-24, feb. 2017. ISSN 1309-7202. Available at: <http://www.eu-journal.org/index.php/EJPE/article/view/49>. Date accessed: 18 july 2019.