@article{10_37236_1010,
     author = {Steven J. Tedford},
     title = {Connectivity of the lifts of a greedoid},
     journal = {The electronic journal of combinatorics},
     year = {2007},
     volume = {14},
     doi = {10.37236/1010},
     zbl = {1120.05016},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/1010/}
}