Published in Bulletin de la Société Philomathique de Paris, in 1878, in volume 2, pages 92-96

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

Published in Bulletin de la Société philomathique de Paris, in 1878, in volume 2, pages 220-221

Created: 2012-09-17, modified: 2012-09-17

Published in Bulletin de la Société philomathique de Paris, in 1878, in volume 2, pages 221-222

Created: 2013-04-19, modified: 2013-04-19