@article{1183419155,
author = {Richardson, S. F.},
title = {Note on systems of IN-- and circumscribed polygons},
journal = {Bull. Amer. Math. Soc.},
volume = {14},
number = {3},
year = {1907},
pages = { 177-182},
language = {en},
url = {http://dml.mathdoc.fr/item/1183419155}
}
Richardson, S. F. Note on systems of IN– and circumscribed polygons. Bull. Amer. Math. Soc., Tome 14 (1907) no. 3, pp. 177-182. http://gdmltest.u-ga.fr/item/1183419155/