@article{ZNSL_1981_111_a3,
     author = {V. P. Il'in},
     title = {Existence and the optimal choice of the values of parameters in inequalities guaranteeing the validity of embedding theorems},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {63--87},
     year = {1981},
     volume = {111},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_1981_111_a3/}
}