@article{PM_2009_2009_1_a15,
     author = {O{\textquoteright}Farrell, A. G. and  Short, I.},
     title = {Reversibility in the diffeomorphism group of the real line.},
     journal = {Publicacions matem\`atiques},
     pages = {401-415},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/PM_2009_2009_1_a15/}
}