L. Fletcher, "The Optical Indicatrix and the Transmission of Light in Crystals" (read 16 June 1891), Mineralogical Magazine and Journal of the Mineralogical Society, vol. 9, pp. 278–388 (Dec. 1891); reprinted London: Oxford University Press Warehouse, 1892; reviewed by "R.T.G." in Nature, vol. 46, no. 1199 (20 Oct. 1892), pp. 581–582.
books.google.com
Proceedings of the Royal Irish Academy, no. 49 (13 January 1845), pp. 49–51.
L. Fletcher, "The Optical Indicatrix and the Transmission of Light in Crystals" (read 16 June 1891), Mineralogical Magazine and Journal of the Mineralogical Society, vol. 9, pp. 278–388 (Dec. 1891); reprinted London: Oxford University Press Warehouse, 1892; reviewed by "R.T.G." in Nature, vol. 46, no. 1199 (20 Oct. 1892), pp. 581–582.
jstor.org
J. MacCullagh, "On the laws of crystalline reflexion and refraction" (read 9 Jan. 1837), Transactions of the Royal Irish Academy, vol. 18 (1839), pp. 31–74, JSTOR30078974, at p. 38.
J. MacCullagh, "Geometrical propositions applied to the wave theory of light" (read 24 June 1833), Transactions of the Royal Irish Academy, vol. 17 (nominally for 1831), pp. 241–263, JSTOR30078792, at p. 260.
zenodo.org
A. Fresnel, "Extrait du Supplément au Mémoire sur la double réfraction" (read 13 Jan. 1822 ?), printed in Fresnel, 1868, pp. 335–342; translated as "Extrait of the Supplement to the Memoir on double refraction", Zenodo: 5886692, 2022.
A. Fresnel, "Extrait d'un Mémoire sur la double réfraction", Annales de Chimie et de Physique, Ser. 2, vol. 28, pp. 263–279 (March 1825); reprinted as "Extrait du second Mémoire sur la double réfraction" in Fresnel, 1868, pp. 465–478; translated as "Extrait of a [second] memoir on double refraction", Zenodo: 5442206, 2022. (An earlier version of this paper appeared in Bulletin des Sciences par la Société Philomatique de Paris, vol. 9, pp. 63–71, May 1822.)
