Published in Anales De La Sociedad Cientifica Argentina, in 1921, in volume 91, pages 19-35

Published in Anales de la Sociedad Cientifica Argentina, in 1921, in volume 91, pages 36-41

Published in Anales De La Sociedad Cientifica Argentina, in 1921, in volume 91, pages 97-193

Published in Anales de la Sociedad Cientifica Argentina, in 1921, in volume 92, pages 124-128

Published in Anales De La Sociedad Cientifica Argentina, in 1921, in volume 92, pages 145-192