TY - JOUR AU - Geffert, Viliam TI - A hierarchy that does not collapse : alternations in low level space JO - RAIRO - Theoretical Informatics and Applications - Informatique Théorique et Applications PY - 1994 SP - 465 EP - 512 VL - 28 IS - 5 PB - EDP-Sciences UR - http://archive.numdam.org/item/ITA_1994__28_5_465_0/ LA - en ID - ITA_1994__28_5_465_0 ER -