@article{SM_1972_17_4_a10,
     author = {D. A. Ponomarev},
     title = {Deformations of smooth analytic fiberings on spaces with resolvable singularities},
     journal = {Sbornik. Mathematics},
     pages = {617--623},
     year = {1972},
     volume = {17},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1972_17_4_a10/}
}