Published in Compte Rendu, in 1880, in volume 90, pages 1579-1580

Created: 2012-06-26, modified: 2017-01-06

Published in Compte Rendu, in 1880, in volume 91, pages 436-439

Created: 2012-06-26, modified: 2012-06-26

Published in Comptes rendus hebdomadaires des séances de l'Académie des sciences, in 1880, in volume 91, pages 1034-1038

Created: 2013-05-07, modified: 2013-05-07

Published in Compte Rendu, in 1880, in volume 91, pages 1094-1095

Created: 2012-06-26, modified: 2012-06-26