@article{MS2_1982__51_166802,
     author = {Clas L\"ofwall},
     title = {Appendix to },
     journal = {Mathematica Scandinavica},
     pages = {59--62},
     publisher = {mathdoc},
     volume = {51},
     year = {1982},
     zbl = {0499.16002},
     url = {http://geodesic.mathdoc.fr/item/MS2_1982__51_166802/}
}