@article{IM2_1987_29_3_a8,
     author = {V. A. Babets},
     title = {Pseudoforms with negative curvature on~$\mathbf{CP}_n$},
     journal = {Izvestiya. Mathematics},
     pages = {677--688},
     year = {1987},
     volume = {29},
     number = {3},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1987_29_3_a8/}
}