@article{VMUMM_2009_2_a13,
     author = {V. N. Sorokin},
     title = {Joint approximations of the square root, logarithm, and arcsine functions},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {65--69},
     year = {2009},
     number = {2},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2009_2_a13/}
}