@article{GDZPPN002344483, title = {Solution of problem 15 (Vol. 3 (1955), p. 306)}, journal = {Mathematica Scandinavica}, volume = {4}, year = {1956}, pages = {174-176}, url = {http://dml.mathdoc.fr/item/GDZPPN002344483} }
FABRICIUS-BJERRE, FR. Solution of problem 15 (Vol. 3 (1955), p. 306). Mathematica Scandinavica, Tome 4 (1956) pp. 174-176. http://gdmltest.u-ga.fr/item/GDZPPN002344483/