TY  - JOUR
AU  - Galli, A.
AU  - Sagastume, M.
TI  - A subdirectly irreducible symmetric Heyting algebra which is not simple.
JO  - Portugaliae mathematica
PY  - 1994
SP  - 141
EP  - 146
VL  - 51
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PORMA_1994__51_1_47027/
LA  - en
ID  - PORMA_1994__51_1_47027
ER  -