@article{VMUMM_1990_5_a16,
     author = {A. Yu. Chanysheva},
     title = {Positive-definite functions of a special type},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {71--74},
     publisher = {mathdoc},
     number = {5},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1990_5_a16/}
}