IVCHENKO, V. V..
The Paraxial Approximation: Revisited.
Revista Cubana de FĂsica, [S.l.], v. 37, n. 2, p. 84-87, dec. 2020.
ISSN 2224-7939.
Available at: <http://revistacubanadefisica.org/index.php/rcf/article/view/2020v37p084>. Date accessed: 28 mar. 2024.