@article{ELA_2008__17__a41,
     author = {Bueno, M.I. and Furtado, S.},
     title = {On the exponent of $r$-regular primitive matrices},
     journal = {The electronic journal of linear algebra},
     pages = {28--47},
     publisher = {mathdoc},
     volume = {17},
     year = {2008},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/ELA_2008__17__a41/}
}