@article{MS2_1989__65_2_167068,
     author = {O. Martio and F.W. Gehring and K. Hag},
     title = {Quasihyperbolic geodesics in {John} domains.},
     journal = {Mathematica Scandinavica},
     pages = {75--92},
     publisher = {mathdoc},
     volume = {65},
     number = {2},
     year = {1989},
     zbl = {0702.30007},
     url = {http://geodesic.mathdoc.fr/item/MS2_1989__65_2_167068/}
}