RIVEROS, Hector Gerardo.
 How to Find Pre-Concepts about Charges and Magnets?.
<strong>European Journal of Physics Education</strong>, [S.l.], v. 11, n. 2, p. 1-4, jan. 2020.
ISSN 1309-7202.
Available at: &lt;<a href="http://eu-journal.org/index.php/EJPE/article/view/260" target="_new">http://eu-journal.org/index.php/EJPE/article/view/260</a>&gt;. Date accessed: 22 sep. 2023.