@article{IM2_2006_70_4_a6,
     author = {A. V. Pokrovskii},
     title = {The best asymmetric approximation in spaces of continuous functions},
     journal = {Izvestiya. Mathematics},
     pages = {809--839},
     year = {2006},
     volume = {70},
     number = {4},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_2006_70_4_a6/}
}