@article{10_37236_121,
     author = {Niklas Eriksen and Ragnar Freij and Johan W\"astlund},
     title = {Enumeration of derangements with descents in prescribed positions},
     journal = {The electronic journal of combinatorics},
     year = {2009},
     volume = {16},
     number = {1},
     doi = {10.37236/121},
     zbl = {1181.05003},
     url = {http://geodesic.mathdoc.fr/articles/10.37236/121/}
}