TY - JOUR AU - B. V. Simonov TI - On the Element of Best Nonsymmetric Approximation in Spaces with Nonsymmetric Quasinorm JO - Matematičeskie zametki PY - 2003 SP - 902 EP - 912 VL - 74 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/MZM_2003_74_6_a10/ LA - ru ID - MZM_2003_74_6_a10 ER -