@article{MZM_1991_49_1_a16,
     author = {V. V. Shelukhin},
     title = {On~a~quadratic functional in a nonlocal boundary value problem for the heat equation},
     journal = {Matemati\v{c}eskie zametki},
     pages = {135--143},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1991_49_1_a16/}
}