@article{AL_1999_38_6_a0,
     author = {P. E. Alaev},
     title = {Complexity of {Boolean} algebras and their {Scott} rank},
     journal = {Algebra i logika},
     pages = {643--666},
     year = {1999},
     volume = {38},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1999_38_6_a0/}
}