@article{DE_2006_42_12_a11,
     author = {V. A. Il'in and E. I. Moiseev},
     title = {Optimization of the boundary control of string vibrations by an elastic force on an arbitrary sufficiently large time interval},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1699--1711},
     publisher = {mathdoc},
     volume = {42},
     number = {12},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_2006_42_12_a11/}
}