@article{VMUMM_2009_1_a11,
     author = {M. A. Podkolzina},
     title = {The number of $\mathrm{S}$-precomplete classes in the functional system $P_k^\tau$},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {61--62},
     publisher = {mathdoc},
     number = {1},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_2009_1_a11/}
}