%0 Journal Article %A E. I. Bravyi %T Minimal periods of solutions to higher-order functional differential equations %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2013 %P 77-82 %N 12 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2013_12_a7/ %G ru %F IVM_2013_12_a7