@article{ZNSL_1999_261_a19,
     author = {S. E. Stepanov},
     title = {The vector space of the conformal {Killing} forms on a {Riemannian} manifold},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {240--265},
     publisher = {mathdoc},
     volume = {261},
     year = {1999},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1999_261_a19/}
}