@article{TRSPY_1992_201_a7,
     author = {V. I. Burenkov and P. M. Badzhrachariya},
     title = {Approximation by infinitely differentiable vectorfunctions with preservation of the image for various functional spaces},
     journal = {Informatics and Automation},
     pages = {152--164},
     publisher = {mathdoc},
     volume = {201},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/TRSPY_1992_201_a7/}
}