@article{AL_2005_44_4_a4,
     author = {A. G. Pinus},
     title = {Semilattices of {Definable} {Subalgebras}},
     journal = {Algebra i logika},
     pages = {474--482},
     publisher = {mathdoc},
     volume = {44},
     number = {4},
     year = {2005},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2005_44_4_a4/}
}