TY  - JOUR
AU  - I. V. Latkin
TI  - The Occurrence Problem for Subvarieties of the Variety $\mathbf N_2\mathbf A$ Revisited
JO  - Algebra i logika
PY  - 2001
SP  - 580
EP  - 592
VL  - 40
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2001_40_5_a5/
LA  - ru
ID  - AL_2001_40_5_a5
ER  -