@article{EXMA_2004__13_1_51521,
     author = {Pfeifle, Julian and Ziegler, G\"unter M.},
     title = {On the monotone upper bound problem.},
     journal = {Experimental mathematics},
     pages = {1--11},
     publisher = {mathdoc},
     volume = {13},
     number = {1},
     year = {2004},
     zbl = {1068.52019},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_2004__13_1_51521/}
}