Current Literature on Science of Science, volume 20, 1991, pp. 167-169 (Review of Lewis Pyenson's book "Cultural Imperialism and Exact Sciences): p. 168: "Later, in 1925, Einstein visited Argentina, and was met by Enrique Loedel Palumbo, a young Uruguayan physicist then finishing a doctorate at La Plata. Palumbo asked Einstein about a system of differential equations for a point-source gravitational field. Einstein did not know the solution, but was interested in it. Palumbo published on the subject shortly thereafter and was hailed as Argentina's first world-class theoretician."
Amar, Henri; Loedel, Enrique (1957). "Geometric Representation of the Lorentz Transformation". American Journal of Physics. 25 (5): 326–327. Bibcode:1957AmJPh..25..326A. doi:10.1119/1.1934453.
Amar, Henri; Loedel, Enrique (1957). "Geometric Representation of the Lorentz Transformation". American Journal of Physics. 25 (5): 326–327. Bibcode:1957AmJPh..25..326A. doi:10.1119/1.1934453.