De La Llosa, Alvar. “An Encounter Between Two Frente Populares? Diplomatic Relations Between the Spanish Republic in War Time and the Chilean Republic (1931-1940)”. Revista de Historia Social Y de Las Mentalidades, vol. 22, no. 1, June 2018, pp. 031-46, https://journals.usach.cl/ojs/index.php/historiasocial/article/view/3290.