@article{10_37236_2481,
     author = {C. Ryan Vinroot},
     title = {An enumeration of flags in finite vector spaces},
     journal = {The electronic journal of combinatorics},
     year = {2012},
     volume = {19},
     number = {3},
     doi = {10.37236/2481},
     zbl = {1253.05023},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/2481/}
}