@article{SM_1997_188_1_a7,
     author = {N. A. Strelkov},
     title = {Universally optimal wavelets},
     journal = {Sbornik. Mathematics},
     pages = {157--171},
     year = {1997},
     volume = {188},
     number = {1},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1997_188_1_a7/}
}