@article{10_4171_ggd_108,
     author = {Igor Lysenok and Alexei Myasnikov and Alexander Ushakov},
     title = {The conjugacy problem in the {Grigorchuk} group is polynomial time decidable},
     journal = {Groups, geometry, and dynamics},
     pages = {813--833},
     year = {2010},
     volume = {4},
     number = {4},
     doi = {10.4171/ggd/108},
     url = {http://geodesic.mathdoc.fr/articles/10.4171/ggd/108/}
}