Chauvenet W. [1859] On the locus of perpendicular tangents to any conic section. M.M.R. [Mathematical Monthly (Rimkle). Cambridge Mass.] 2, 419-421.
Classification: L14a Théorèmes et problèmes divers relatifs aux tangentes ; Fiche 1830
Chauvenet W. [1858] Remarks upon Cayley's (supposed) new theorem of spherical trigonometry. M.M.R. [Mathematical Monthly (Rimkle). Cambridge Mass.] 1, 282-283.
Classification: K20f Trigonométrie sphérique (ref. F8fα ) ; Théorème de Legendre. Fiche 1816
