Selected writings 1873 – Le stelle cadenti (The Falling Stars) 1893 – La vita sul pianeta Marte (Life on Mars) 1925 – Scritti sulla storia della astronomia antica (Writings on the History of Classical Astronomy) in three volumes. Bologna. Reprint: Milano, Mimesis, 1997.
Selected writings 1873 – Le stelle cadenti (The Falling Stars) 1893 – La vita sul pianeta Marte (Life on Mars) 1925 – Scritti sulla storia della astronomia antica (Writings on the History of Classical Astronomy) in three volumes Bologna. Reprint: Milano, Mimesis, 1997.