@article{1183506219,
author = {Hall, Dick Wick},
title = {On rotation groups of plane continuous curves under pointwise periodic homeomorphisms},
journal = {Bull. Amer. Math. Soc.},
volume = {50},
number = {12},
year = {1944},
pages = { 715-718},
language = {en},
url = {http://dml.mathdoc.fr/item/1183506219}
}
Hall, Dick Wick. On rotation groups of plane continuous curves under pointwise periodic homeomorphisms. Bull. Amer. Math. Soc., Tome 50 (1944) no. 12, pp. 715-718. http://gdmltest.u-ga.fr/item/1183506219/