On the Imprimitive Substitution Groups of Degree Fifteen and the Primitive Substitution Groups of Degree Eighteen
Emilie Norton Martin · American Journal of Mathematics · 1901
Emilie Norton Martin, On the Imprimitive Substitution Groups of Degree Fifteen and the Primitive Substitution Groups of Degree Eighteen, American Journal of Mathematics, Vol. 23, No. 3 (Jul., 1901), pp. 259-286