@article{DM_1999_11_3_a11,
     author = {G. S. Makanin and T. A. Makanina},
     title = {Parametrization of solutions of some equations of squares in a free monoid},
     journal = {Diskretnaya Matematika},
     pages = {133--148},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DM_1999_11_3_a11/}
}