@article{MT_2012_15_2_a4,
     author = {A. V. Kravchenko},
     title = {Complexity of quasivariety lattices for varieties of differential {groupoids.~II}},
     journal = {Matemati\v{c}eskie trudy},
     pages = {89--99},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {2012},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MT_2012_15_2_a4/}
}