SÁNCHEZ-COLINA, Maria; 						ALTSHULER, Ernesto.
Tras medio siglo.
<strong>Revista Cubana de Física</strong>, [S.l.], v. 29, n. 2, p. 51, dec. 2012.
ISSN 2224-7939.
Available at: &lt;<a href="http://revistacubanadefisica.org/index.php/rcf/article/view/RCF_29-2_51_2012" target="_new">http://revistacubanadefisica.org/index.php/rcf/article/view/RCF_29-2_51_2012</a>&gt;. Date accessed: 03 may 2024.