William Lassel

[1983] William Lassell and the Discovery of Neptune ; Robert W. Smith ; Journal for the History of Astronomy 14 (1983) p. 30 [lien]
[1984] William Lassell and the Ring of Neptune - a Case Study in Instrumental Failure ; R. W. Smith ; R. Baum ; Journal for the History of Astronomy 15 (1984) p. 1 [lien]