@article{ZNSL_2011_397_a4,
     author = {S. A. Nazarov and J. Taskinen},
     title = {Double-sided estimates for eigenfrequencies in the {John} problem for freely floating body},
     journal = {Zapiski Nauchnykh Seminarov POMI},
     pages = {89--114},
     publisher = {mathdoc},
     volume = {397},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZNSL_2011_397_a4/}
}