TY  - JOUR
TI  - Yurii Leonidovich Ershov (on his 70th birthday)
JO  - Algebra i logika
PY  - 2010
SP  - I
EP  - V
VL  - 49
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2010_49_6_a0/
LA  - ru
ID  - AL_2010_49_6_a0
ER  -