References
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W. Burnside, On Groups of Order
$p^{\alpha}q^{\beta}$ , Proc. London Math. Soc. S2-1 (1904), no. 1, 388-392. https://doi.org/10.1112/plms/s2-1.1.388 - W. Feit and J. G. Thompson, Solvability of groups of odd order, Pacific J. Math. 13 (1963), no. 3, 775-1029. https://doi.org/10.2140/pjm.1963.13.775
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