%0 Journal Article %A Lorenz Halbeisen %T Fans and bundles in the graph of pairwise sums and products %J The electronic journal of combinatorics %D 2004 %V 11 %N 1 %U http://geodesic.mathdoc.fr/articles/10.37236/1759/ %R 10.37236/1759 %F 10_37236_1759