@article{10_37236_3101,
     author = {Eric Ould Dadah Andriantiana and Stephan Wagner and Hua Wang},
     title = {Greedy trees, subtrees and antichains},
     journal = {The electronic journal of combinatorics},
     year = {2013},
     volume = {20},
     number = {3},
     doi = {10.37236/3101},
     zbl = {1295.05076},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/3101/}
}