@article{UZKU_2009_151_2_a2,
     author = {V. B. Alekseev},
     title = {On {Some} {Closed} {Classes} of {Self-dual} {Partial} {Many-valued} {Functions}},
     journal = {U\v{c}\"enye zapiski Kazanskogo universiteta. Seri\^a Fiziko-matemati\v{c}eskie nauki},
     pages = {16--24},
     publisher = {mathdoc},
     volume = {151},
     number = {2},
     year = {2009},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/UZKU_2009_151_2_a2/}
}