Notes.
Leçons de géométrie analytique Tome 1, GDML_Books, (1886), p. 685 / Harvested from
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@article{PPN592760987+DMDLOG_0011,
     title = {Notes.},
     booktitle = {Le\c cons de g\'eom\'etrie analytique Tome 1},
     series = {GDML\_Books},
     publisher = {Dupont},
     address = {Paris},
     year = {1886},
     pages = {685},
     url = {http://dml.mathdoc.fr/item/PPN592760987+DMDLOG_0011}
}

 (éd.). Notes., dans Leçons de géométrie analytique Tome 1, GDML_Books,  (1886), p. 685. http://gdmltest.u-ga.fr/item/PPN592760987+DMDLOG_0011/