T. Piske, and A. Steinlen. Cognition and Second Language Acquisition: Studies on pre-school, primary school and secondary school children, volume 4 of Multilingualism and Language Teaching, Narr Francke Attempto Verlag, Tübingen, (Mikrozensus).(2022)
K. Guhlemann, and C. Best. Arbeit und Altern: Eine Bilanz nach 20 Jahren Forschung und Praxis, Nomos Verlagsgesellschaft, Baden-Baden, (Mikrozensus).(2021)
A. Balan. DEZVOLTAREA ECONOMICO-SOCIALĂ DURABILĂ A EUROREGIUNILOR ŞI A ZONELOR TRANSFRONTALIERE (SUSTAINABLE ECONOMIC AND SOCIAL DEVELOPMENT OF EUROREGIONS AND CROSS - BORDER AREAS), page 21-27. Iași, Performantica, (2021)(SILC).