Maitte, Bernard (2013), "The Construction of Group Theory in Crystallography", in Barbin, Evelyne; Pisano, Raffaele (eds.), The Dialectic Relation Between Physics and Mathematics in the XIXth Century, History of Mechanism and Machine Science, vol. 16, Springer, pp. 1–30, doi:10.1007/978-94-007-5380-8_1, ISBN9789400753808. See in particular p. 10.
Maitte, Bernard (2013), "The Construction of Group Theory in Crystallography", in Barbin, Evelyne; Pisano, Raffaele (eds.), The Dialectic Relation Between Physics and Mathematics in the XIXth Century, History of Mechanism and Machine Science, vol. 16, Springer, pp. 1–30, doi:10.1007/978-94-007-5380-8_1, ISBN9789400753808. See in particular p. 10.