The Treatise on the Astrolabe (Chaucer)
Gunther, R.T. Chaucer and Messahalla on the Astrolabe.
Oxford, Oxford UP, 1929.
Lipson, Carol. "'I n'am but a lewd compilator': Chaucer's Treatise on the Astrolabe' as Translation." NM 84 (1983), 192-200.
Masi, Michael. "Chaucer, Messahalla, and Bodleian Selden Supra 78." Manuscripta 19 (1975), 36-47.
Owen, Charles A. Jr. "A Certein Numbre of Conclusions: The Nature and Nurture of Children of Chaucer." ChauR 16 (1981), 60-75.
The Treatise on the Astrolab (Messahalla Only)
The Equatorie of the Planetis (attributed to Chaucer)
Price, Derek, ed. The Equatorie of the Planetis.
With a Linguistic Analysis by R.M. Wilson. Cambridge: Cambridge UP,
1955.
Price, D.J. "The Equatorie of the Planetis. Peterhouse MS (I), Attributed to Simon Bredon. Now suggested as an Unknown Work by Chaucer." TLS 29 February 1952, p. 164, and 7 March 1952, p. 180.