@article{TIMM_2014_20_1_a3,
     author = {N. V. Baidakova},
     title = {Lower estimates for the error of approximation of derivatives for composite finite elements with smoothness properties},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {32--42},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2014},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2014_20_1_a3/}
}