Vázquez-Larruscaín, Miguel. “’Ser’ Focalizador Como Mezcolanza Sintactica”. Borealis – An International Journal of Hispanic Linguistics 4, no. 1 (May 29, 2015): 121-136. Accessed March 6, 2021. https://septentrio.uit.no/index.php/borealis/article/view/3162.