@article{MZM_1990_48_2_a11,
     author = {S. E. Stepanov},
     title = {Bochner's technique in the theory of {Riemannian} almost product structures},
     journal = {Matemati\v{c}eskie zametki},
     pages = {93--98},
     publisher = {mathdoc},
     volume = {48},
     number = {2},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_2_a11/}
}