@article{IVM_1993_11_a12,
     author = {A. N. Churilov},
     title = {A~frequency criterion for the boundedness of solutions of phase systems with delay},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {77--79},
     publisher = {mathdoc},
     number = {11},
     year = {1993},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1993_11_a12/}
}