Published in Anales De La Sociedad Cientifica Argentina, in 1982, in volume 211-212, pages 3-7

Created: 2016-02-12, modified: 2016-02-12

Published in Anales De La Sociedad Cientifica Argentina, in 1982, in volume 211-212, pages 57-60

Created: 2016-02-12, modified: 2016-02-12