@article{PPN235181684_0212+dmdlog10,
title = {The Symmetries of Classes of Elements in a Free Group of Rank Two.},
journal = {Mathematische Annalen},
volume = {212},
year = {1974},
pages = {21-44},
zbl = {0277.20053},
url = {http://dml.mathdoc.fr/item/PPN235181684_0212+dmdlog10}
}
Wicks, M.J. The Symmetries of Classes of Elements in a Free Group of Rank Two.. Mathematische Annalen, Tome 212 (1974) pp. 21-44. http://gdmltest.u-ga.fr/item/PPN235181684_0212+dmdlog10/