@article{IVM_1970_12_a14,
     author = {P. P. Tammela},
     title = {An estimate of the criticl determinant of a~two-dimensional convex symmetric domain},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {103--107},
     publisher = {mathdoc},
     number = {12},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1970_12_a14/}
}