@article{1103857629,
author = {Radin, Charles},
title = {Gentle perturbations},
journal = {Comm. Math. Phys.},
volume = {20},
number = {1},
year = {1971},
pages = { 189-198},
language = {en},
url = {http://dml.mathdoc.fr/item/1103857629}
}
Radin, Charles. Gentle perturbations. Comm. Math. Phys., Tome 20 (1971) no. 1, pp. 189-198. http://gdmltest.u-ga.fr/item/1103857629/