ANAYA, José G.; 						MAYA, David; 						OROZCO-ZITLI, Fernando.
 Making Holes in the Second Symmetric Products of Dendrites and Some Fans.
<strong>CIENCIA ergo-sum</strong>, [S.l.], v. 19, n. 1, p. 83-92, oct. 2017.
ISSN 2395-8782.
Available at: &lt;<a href="https://cienciaergosum.uaemex.mx/article/view/7776" target="_new">https://cienciaergosum.uaemex.mx/article/view/7776</a>&gt;. Date accessed: 19 aug. 2026.