Arguedas T., Vernor. 2019. “José Echegaray, a Multi-Faceted Mathematician: Nobel Prize in Literature, an Outstanding Politician, Promoter of Spanish Physics and Mathematics at the End of the 20th Century and the Beginning of the 20th: José Echegaray, Un matemático polifacético: Premio Nobel Literatura, político destacadísimo, Impulsor De La física Y Mate española Al Final Del Siglo IXX Y De Principios Del XX”. Revista Digital: Matemática, Educación E Internet 19 (2). https://doi.org/10.18845/rdmei.v19i2.4220.