@article{IM_1982__66_142896,
     author = {Klaus Schmidt and Jane Hawkins},
     title = {On {C2-Diffeomorphisms} of the {Circle} which are of {Type} {III1.}},
     journal = {Inventiones mathematicae},
     pages = {511--518},
     publisher = {mathdoc},
     volume = {66},
     year = {1982},
     zbl = {0506.58019},
     url = {http://geodesic.mathdoc.fr/item/IM_1982__66_142896/}
}