@article{IVM_2008_2_a5,
     author = {R. Z. Dautov and A. I. Mikheeva},
     title = {On the accuracy of the penalty method for parabolic variational inequalities with an obstacle inside the domain},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {41--47},
     publisher = {mathdoc},
     number = {2},
     year = {2008},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_2008_2_a5/}
}