@article{VMUMM_1991_4_a2,
     author = {A. A. Zolotykh},
     title = {On ideals of weak identities with an extended deduction rule},
     journal = {Vestnik Moskovskogo universiteta. Matematika, mehanika},
     pages = {11--15},
     publisher = {mathdoc},
     number = {4},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VMUMM_1991_4_a2/}
}