v. 1. National ideologies and language policies / edited by Roumen Daskalov and Tchavdar Marinov -- v. 2. Transfers of political ideologies and institutions / edited by Roumen Daskalov and Diana Mishkova -- v. 3. Shared pasts, disputed legacies / edited by Roumen Daskalov and Alexander Vezenkov -- v. 4. Concepts, approaches, and (self-) representations / edited by Roumen Daskalov, Diana Mishkova, Tchavdar Marinov, Alexander Vezenkov.