@article{DAN_1980_252_5_a10,
     author = {A. V. Fursikov},
     title = {On some control problems and results concerning the unique solvability of a mixed boundary value problem for the 
},
     journal = {Doklady Akademii Nauk},
     pages = {1066--1070},
     publisher = {mathdoc},
     volume = {252},
     number = {5},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1980_252_5_a10/}
}