@article{SM_1972_17_2_a0,
     author = {V. T. Fomenko},
     title = {On~Darboux surfaces in {a~Riemannian} space},
     journal = {Sbornik. Mathematics},
     pages = {183--189},
     publisher = {mathdoc},
     volume = {17},
     number = {2},
     year = {1972},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_17_2_a0/}
}