@article{10_1017_S001708950999005X,
     author = {CILIA, RAFFAELLA and GUTI\'ERREZ, JOAQU\'IN M.},
     title = {LEFT {l1-FACTORABLE} {POLYNOMIALS}},
     journal = {Glasgow mathematical journal},
     pages = {631--649},
     year = {2009},
     volume = {51},
     number = {3},
     doi = {10.1017/S001708950999005X},
     url = {http://geodesic.mathdoc.fr/articles/10.1017/S001708950999005X/}
}