@article{TIMM_2011_17_3_a28,
     author = {E. V. Strelkova and V. T. Shevaldin},
     title = {Form preservation under approximation by local exponential splines of an arbitrary order},
     journal = {Trudy Instituta matematiki i mehaniki},
     pages = {291--299},
     year = {2011},
     volume = {17},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TIMM_2011_17_3_a28/}
}