Citation: E. Altenburger et B. Ingervall, THE INITIAL EFFECTS OF THE TREATMENT OF CLASS-II, DIVISION-1 MALOCCLUSIONS WITH THE VAN-BEEK ACTIVATOR COMPARED WITH THE EFFECTS OF THE HERREN ACTIVATOR AND AN ACTIVATOR-HEADGEAR COMBINATION, European journal of orthodontics (Print), 20(4), 1998, pp. 389-397