TY  - JOUR
AU  - Blanchet-Sadri, F.
TI  - On dot-depth two
JO  - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications
PY  - 1990
SP  - 521
EP  - 529
VL  - 24
IS  - 6
PB  - EDP-Sciences
UR  - http://archive.numdam.org/item/ITA_1990__24_6_521_0/
LA  - en
ID  - ITA_1990__24_6_521_0
ER  -