@article{ADM_2010_9_1_a1,
     author = {Tara Colleen Davis},
     title = {Length functions for semigroup embeddings},
     journal = {Algebra and discrete mathematics},
     pages = {1--15},
     publisher = {mathdoc},
     volume = {9},
     number = {1},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ADM_2010_9_1_a1/}
}