@article{TIMM_2019_25_4_a17,
     author = {S. I. Novikov},
     title = {Extremal function interpolation for a second-order linear differential operator},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {164--176},
     year = {2019},
     volume = {25},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2019_25_4_a17/}
}