sentences:  However, his work was not solely investigation.He was also a great publisher and disseminator of modern theories of physics that were defined in the first thirty years of the 20th century.Thus, in 1912 he published an article in the magazine "Real Academia de Ciencias Exactas, Físicas y Naturales" titled "Fundamental principles of vectorial analysis in three-dimensional space and in Minkowski space" ("Principios fundamentales del análisis vectorial en el espacio de tres dimensiones y en el Universo de Minkowski").