@article{AL_1975_14_3_a2,
     author = {E. A. Palyutin},
     title = {A supplement to {Ju.} {L.} {Er\v{s}ov's} article: {``The} upper semilattice of
},
     journal = {Algebra i logika},
     pages = {284--287},
     publisher = {mathdoc},
     volume = {14},
     number = {3},
     year = {1975},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1975_14_3_a2/}
}