@article{10_37236_2062,
     author = {Axel Hultman and Svante Linusson and G\"unter M. Ziegler},
     title = {Preface},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {2},
     doi = {10.37236/2062},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2062/}
}