@article{TIMM_2001_7_2_a7,
     author = {I. V. Dobrynina and V. N. Bezverkhnii},
     title = {On width in some class of groups with two generators and one defining relation},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {95--102},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {2001},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2001_7_2_a7/}
}