@article{VMUMM_2006_3_a1,
     author = {M. A. Pribyl},
     title = {Approximate controllability in $\mathbb{L}_2$ of a parabolic equation with a boundary condition that depends only on time},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {6--13},
     publisher = {mathdoc},
     number = {3},
     year = {2006},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2006_3_a1/}
}