Published in Compte Rendu De L'academie Des Sciences Paris, in 1920, in volume 170, pages 121-123

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

Published in Compte Rendu De L'academie Des Sciences Paris, in 1920, in volume 170, pages 263-266

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

Published in Compte Rendu De L'academie Des Sciences Paris, in 1920, in volume 170, pages 816-818

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

Published in Compte Rendu de l'Academie des Sciences Paris, in 1920, in volume 170, pages 1615-1617

Created: 2013-04-07, modified: 2013-04-07