Resultant and conductor of geometrically semi-stable self maps of the projective line over a number field or function field

Szpiro, Lucien et al. «Resultant and conductor of geometrically semi-stable self maps of the projective line over a number field or function field». Publicacions Matemàtiques, 2014, vol.VOL 58, núm. 2, p. 295-29, https://raco.cat/index.php/PublicacionsMatematiques/article/view/298368.