@article{02213867,
title = {Derivatives of circle rotations, and similarity of orbits.},
journal = {Zapiski Nauchnykh Seminarov POMI},
volume = {314},
year = {2004},
pages = {272-284},
zbl = {1082.37040},
language = {en},
url = {http://dml.mathdoc.fr/item/02213867}
}
Shutov, A.V. Derivatives of circle rotations, and similarity of orbits.. Zapiski Nauchnykh Seminarov POMI, Tome 314 (2004) pp. 272-284. http://gdmltest.u-ga.fr/item/02213867/