Jurkuvėnas, Vytautas, Olga Zamalijeva, Vilmantė Pakalniškienė, Antanas Kairys, and Albinas Bagdonas. 2017. “Social Network Size, Personality and Well-Being in Preretirement and Retirement”. Psichologija 55 (July), 7-21. https://doi.org/10.15388/Psichol.2017.55.10733.