“Speech by José Echegaray in the National Assembly on 8 March 1873 (Journal of Sessions of the National Assembly number 19): (Accompanied by a commentary by Alejandro Nieto from his book ‘La Primera República Española’)” (2022) Journal of the Cortes Generales, (112), pp. 19–41. doi:10.33426/rcg/2022/112/1655.