Published in Cr Ac Sci, in 1902, in volume 134, pages 512-614

Published in Cr Ac Sci, in 1902, in volume 134, pages 781-784

Published in Cr Ac Sci, in 1902, in volume 134, pages 961-964

Published in Cr Ac Sci, in 1902, in volume 135, pages 717-721

Published in Cr Ac Sci, in 1902, in volume 135, pages 838-840

Published in Cr Ac Sci, in 1902, in volume 135, pages 1036-1040