@article{AL_1966_5_5_a8,
     author = {B. A. Trakhtenbrot},
     title = {Letter to the editor},
     journal = {Algebra i logika},
     pages = {95},
     publisher = {mathdoc},
     volume = {5},
     number = {5},
     year = {1966},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1966_5_5_a8/}
}