The general sextic polynomial equation
See also Cubic Equation, Quadratic Equation, Quartic Equation, Quintic Equation
References
Coble, A. B. ``The Reduction of the Sextic Equation to the Valentiner Form--Problem.'' Math. Ann. 70, 337-350, 1911a.
Coble, A. B. ``An Application of Moore's Cross-ratio Group to the Solution of the Sextic Equation.'' Trans. Amer. Math. Soc. 12,
311-325, 1911b.
Cole, F. N. ``A Contribution to the Theory of the General Equation of the Sixth Degree.'' Amer. J. Math. 8, 265-286, 1886.