@article{MT_2004_7_2_a3,
     author = {S. Yu. Podzorov},
     title = {Dual {Covers} of {the~Greatest} {Element} of {the~Rogers} {Semilattice}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {98--108},
     publisher = {mathdoc},
     volume = {7},
     number = {2},
     year = {2004},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2004_7_2_a3/}
}