@article{IM2_2004_68_2_a8,
     author = {A. M. Shur and Yu. V. Gamzova},
     title = {Partial words and the interaction property of periods},
     journal = {Izvestiya. Mathematics },
     pages = {405--428},
     publisher = {mathdoc},
     volume = {68},
     number = {2},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2004_68_2_a8/}
}