@article{IVM_2003_5_a9,
     author = {G. G. Islamov},
     title = {On the minimum number of orthogonal constraints that eliminate natural oscillations with specific frequencies},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {78--81},
     publisher = {mathdoc},
     number = {5},
     year = {2003},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2003_5_a9/}
}