@article{SM_2022_213_11_a1,
     author = {V. I. Buslaev},
     title = {Necessary and sufficient conditions for extending a~function to {a~Carath\'eodory} function},
     journal = {Sbornik. Mathematics},
     pages = {1488--1506},
     year = {2022},
     volume = {213},
     number = {11},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_2022_213_11_a1/}
}