@article{GDZPPN002343096, title = {Problem 4 (Vol. l (1953), p. 310)}, journal = {Mathematica Scandinavica}, volume = {2}, year = {1954}, pages = {159-159}, url = {http://dml.mathdoc.fr/item/GDZPPN002343096} }
FUGLEDE, BENT. Problem 4 (Vol. l (1953), p. 310). Mathematica Scandinavica, Tome 2 (1954) p. 159. http://gdmltest.u-ga.fr/item/GDZPPN002343096/