@article{IM2_2013_77_1_a4,
     author = {S. A. Kuleshov},
     title = {Isometries of semi-orthogonal forms on a~$\mathbb Z$-module of rank~3},
     journal = {Izvestiya. Mathematics },
     pages = {44--86},
     publisher = {mathdoc},
     volume = {77},
     number = {1},
     year = {2013},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2013_77_1_a4/}
}