SINGH, Satya Pal.
 Solving Hydrogen Atom Problem Using Spherical Polar Coordinates: A Qualitative Study.
<strong>European Journal of Physics Education</strong>, [S.l.], v. 10, n. 4, p. 1-21, sep. 2019.
ISSN 1309-7202.
Available at: &lt;<a href="https://eu-journal.org/index.php/EJPE/article/view/247" target="_new">https://eu-journal.org/index.php/EJPE/article/view/247</a>&gt;. Date accessed: 05 may 2024.
doi: <a href="https://doi.org/10.20308/ejpe.v10i4.247">https://doi.org/10.20308/ejpe.v10i4.247</a>.