@article{TIMM_2012_18_4_a11,
     author = {Yu. S. Volkov and E. G. Pytkeev and V. T. Shevaldin},
     title = {Orders of approximation by local exponential splines},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {135--144},
     year = {2012},
     volume = {18},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2012_18_4_a11/}
}