@article{MZM_2023_114_1_a5,
     author = {V. P. Zastavnyi},
     title = {Analog of {Schoenberg's} {Theorem} for $a${-Conditionally} {Negative} {Definite} {Matrix-Valued} {Kernels}},
     journal = {Matemati\v{c}eskie zametki},
     pages = {81--93},
     publisher = {mathdoc},
     volume = {114},
     number = {1},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_2023_114_1_a5/}
}