@article{FORUM_1992__4_6_141664,
     author = {Ulf-Rainer Fiebig},
     title = {Gyration numbers for involutions of subshifts of finite type {I.}},
     journal = {Forum mathematicum},
     pages = {77--108},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1992},
     zbl = {0751.58029},
     url = {http://geodesic.mathdoc.fr/item/FORUM_1992__4_6_141664/}
}