@article{hal-00003272,
author = {Kolev, Boris},
title = {Periodic orbits of period 3 in the disc},
journal = {HAL},
volume = {1994},
number = {0},
year = {1994},
language = {en},
url = {http://dml.mathdoc.fr/item/hal-00003272}
}
Kolev, Boris. Periodic orbits of period 3 in the disc. HAL, Tome 1994 (1994) no. 0, . http://gdmltest.u-ga.fr/item/hal-00003272/