@article{DVMG_2008_8_2_a5,
     author = {A. S. Savenkova},
     title = {Optimal multiplicative control for {Helmholtz} equation},
     journal = {Dalʹnevosto\v{c}nyj matemati\v{c}eskij \v{z}urnal},
     pages = {206--217},
     publisher = {mathdoc},
     volume = {8},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DVMG_2008_8_2_a5/}
}