Eyewitness to Old St. Peter's a study of Maffeo Vegio's "Remembering the ancient history of St. Peter's Basilica in Rome" : with translation and a digital reconstruction of the church - Smith, Christine ca. 20./21. Jh; O'Connor, Joseph F. 1943-; Vegius, Mapheus 1407-1458 (Cambridge University Press, 2019)