@article{DMTCS_2012_special_263_a2,
     author = {McNamara, Peter R. W. and Sagan, Bruce E.},
     title = {The {M\"obius} function of generalized subword order},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {DMTCS Proceedings vol. AR, 24th International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2012)},
     year = {2012},
     doi = {10.46298/dmtcs.3016},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.3016/}
}