@article{10_37236_465,
     author = {Ta Sheng Tan},
     title = {Traces without maximal chains},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/465},
     zbl = {1205.05234},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/465/}
}