TY - JOUR A1 - Oberauer, Klaus A1 - Demmrich, Anke A1 - Mayr, Ulrich A1 - Kliegl, Reinhold T1 - Dissociating retention and access in working memory : an age-comparative study of mental arithmetic Y1 - 2001 ER - TY - JOUR A1 - Mayr, Ulrich A1 - Spieler, D. A1 - Kliegl, Reinhold T1 - Untitled - Introduction Y1 - 2001 ER -