R.-E. Gaines [1899] A graphical method of deducing the criteria for the roots of cubic and quartic equations (A. of M., 13, 111-112; 1899-1900). A.ofM. [Annals of Mathematics. New-York.] 13, 111-112.
Classification: A3k Équations des troisième et quatrième degrés. Fiche 1560
JFM 31.0099.04

---