@article{AL_1981_20_1_a6,
     author = {N. I. Prodan},
     title = {On a variety of $\mathrm{CHQ}$-algebras},
     journal = {Algebra i logika},
     pages = {92--100},
     year = {1981},
     volume = {20},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1981_20_1_a6/}
}