@article{RM_2005_60_6_a6,
     author = {V. A. Il'in and E. I. Moiseev},
     title = {Optimization of boundary controls of string vibrations},
     journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova},
     pages = {1093--1119},
     publisher = {mathdoc},
     volume = {60},
     number = {6},
     year = {2005},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/RM_2005_60_6_a6/}
}