@article{TM_2007_259_a9,
     author = {S. M. Natanzon},
     title = {Singularities and {Noncommutative} {Frobenius} {Manifolds}},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {143--155},
     year = {2007},
     volume = {259},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TM_2007_259_a9/}
}