@article{MS2_1962__11_165823,
     author = {Bo T. Stenstr\"om},
     title = {Dynamical {Systems} with a {Certain} {Local} {Contraction} {Property.}},
     journal = {Mathematica Scandinavica},
     pages = {151--155},
     publisher = {mathdoc},
     volume = {11},
     year = {1962},
     zbl = {0178.24803},
     url = {http://geodesic.mathdoc.fr/item/MS2_1962__11_165823/}
}