@article{INTO_2019_166_a3,
     author = {L. N. Kurtova and N. N. Mot'kina},
     title = {On types of solutions of the {Lagrange} problem},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {41--48},
     publisher = {mathdoc},
     volume = {166},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2019_166_a3/}
}