@article{MS2_1954__2_165557,
     author = {E.THUE POULSEN},
     title = {Problem 10},
     journal = {Mathematica Scandinavica},
     pages = {346--346},
     publisher = {mathdoc},
     volume = {2},
     year = {1954},
     url = {http://geodesic.mathdoc.fr/item/MS2_1954__2_165557/}
}