de la Llave, P. 1832 Sobre el axin, especie nueva de Coccus, y sobre la grasa que de él se estrae. [On Axin a new species of Coccus and the waxy substance that can be extracted from it].. Registro Trimestre ó Colección de Memorias de Historia, Literatura, Ciencias y Artes 1(2): 147-152.

Notes: Coccus axin n. sp.; discussion of waxy substance obtained from it. Note by Yair Ben-Dov (April 2009): Morrison & Renk (1957: 141), gave the title of the Mexican Periodical as if it was the title of the article.