@article{AL_2005_44_3_a0,
     author = {S. A. Badaev and S. S. Goncharov and A. Sorbi},
     title = {Elementary {Theories} for {Rogers} {Semilattices}},
     journal = {Algebra i logika},
     pages = {261--268},
     publisher = {mathdoc},
     volume = {44},
     number = {3},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2005_44_3_a0/}
}