@article{MZM_2004_75_5_a10,
     author = {V. T. Fomenko},
     title = {Classification of {Two-Dimensional} {Surfaces} with {Zero} {Normal} {Torsion} in {Four-Dimensional} {Spaces} of {Constant} {Curvature}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {744--756},
     publisher = {mathdoc},
     volume = {75},
     number = {5},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2004_75_5_a10/}
}