Arguedas T., V. 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. Mathematics, Education and Internet Journal. 19, 2 (Apr. 2019). DOI:https://doi.org/10.18845/rdmei.v19i2.4220.