@article{VMUMM_2005_6_a1,
     author = {M. K. Potapov},
     title = {Relationship of generalized smoothness moduli of differentiable functions and their best approximations by algebraic polynomials},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {10--17},
     publisher = {mathdoc},
     number = {6},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2005_6_a1/}
}