@article{10_37236_372,
     author = {Eugenijus Manstavi\v{c}ius},
     title = {On some densities in the set of permutations},
     journal = {The electronic journal of combinatorics},
     year = {2010},
     volume = {17},
     doi = {10.37236/372},
     zbl = {1196.60018},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/372/}
}