@article{AL_1984_23_3_a6,
     author = {S. A. Chikhachev},
     title = {An example of a theory without weakly},
     journal = {Algebra i logika},
     pages = {336--340},
     publisher = {mathdoc},
     volume = {23},
     number = {3},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1984_23_3_a6/}
}