TY  - JOUR
AU  - N. T. Kogabaev
TI  - The class of projective planes is noncomputable
JO  - Algebra i logika
PY  - 2008
SP  - 428
EP  - 455
VL  - 47
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/AL_2008_47_4_a1/
LA  - ru
ID  - AL_2008_47_4_a1
ER  -