@article{DMTCS_2006_8_a17,
     author = {Mansour, Toufik and Sirhan, Basel O.},
     title = {Counting l-letter subwords in compositions},
     journal = {Discrete mathematics & theoretical computer science},
     publisher = {mathdoc},
     volume = {8},
     year = {2006},
     doi = {10.46298/dmtcs.376},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.46298/dmtcs.376/}
}