TY - JOUR AU - Granirer, Edmond E. TI - Strong and Extremely Strong Ditkin sets forthe Banach Algebras Apr (G) = A p ⋂ L r (G) JO - Canadian journal of mathematics PY - 2011 SP - 123 EP - 135 VL - 63 IS - 1 UR - http://geodesic.mathdoc.fr/articles/10.4153/CJM-2010-077-0/ DO - 10.4153/CJM-2010-077-0 ID - 10_4153_CJM_2010_077_0 ER -