@article{MZM_1990_48_3_a0,
     author = {D. Z. Arov},
     title = {Carath\'eodory theorem for matrix-valued functions and the maximal jump of spectral functions in extension problems},
     journal = {Matemati\v{c}eskie zametki},
     pages = {3--11},
     publisher = {mathdoc},
     volume = {48},
     number = {3},
     year = {1990},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1990_48_3_a0/}
}