Jurkuvėnas, Vytautas, Olga Zamalijeva, Vilmantė Pakalniškienė, Antanas Kairys, and Albinas Bagdonas. “Social Network Size, Personality and Well-Being in Preretirement and Retirement”. Psichologija 550 (July 5, 2017): 7-21. Accessed December 4, 2021. https://www.journals.vu.lt/psichologija/article/view/10733.