%0 Journal Article %A G. G. Islamov %T On the minimum number of orthogonal constraints that eliminate natural oscillations with specific frequencies %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2003 %P 78-81 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2003_5_a9/ %G ru %F IVM_2003_5_a9