@article{1183494071,
author = {Benton, T. C.},
title = {A definition of an unknotted
simple closed curve},
journal = {Bull. Amer. Math. Soc.},
volume = {36},
number = {11},
year = {1930},
pages = { 406-408},
language = {en},
url = {http://dml.mathdoc.fr/item/1183494071}
}
Benton, T. C. A definition of an unknotted simple closed curve. Bull. Amer. Math. Soc., Tome 36 (1930) no. 11, pp. 406-408. http://gdmltest.u-ga.fr/item/1183494071/