@article{TRSPY_2016_294_a17,
     author = {N. N. Bogolyubov Jr. and A. V. Soldatov},
     title = {On upper bounds in the {Fr\"ohlich} polaron model},
     journal = {Informatics and Automation},
     pages = {293--299},
     publisher = {mathdoc},
     volume = {294},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_2016_294_a17/}
}