@article{RLIN_1997_9_8_1_a2,
     author = {Baiocchi, Claudio},
     title = {On some properties of doubly-periodic words},
     journal = {Atti della Accademia nazionale dei Lincei. Rendiconti Lincei. Matematica e applicazioni},
     pages = {39--47},
     publisher = {mathdoc},
     volume = {Ser. 9, 8},
     number = {1},
     year = {1997},
     zbl = {0886.68107},
     mrnumber = {632866},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RLIN_1997_9_8_1_a2/}
}