Pedro Dionisio de la Garza Cepeda, Mexican physicist (Montemorelos, Nuevo León State 28 October 1851 – Ciudad de Mexico 29 March 1897)

Discovered a new way to build optical axes and double diffraction in anisotropic crystals and established the formula of polarized cylinder in anisotropic crystals in his thesis The light waves at Gottingen University (1874)

SOME BIBLIOGRAPHY 

La geometria y su historia (1876)

Geometria sintética (1877)

Aritmetica de los vectores y cuaternios (1884)

Elementos de mecânica según el método de los vectores (1886)