Tauraite, Viktorija, and Zigmas Lydeka. “Modeling Optimal Time Allocation for Work and Personal Life at The National Level (Case in Lithuania)”. JOURNAL OF SOCIAL SCIENCE RESEARCH 13 (December 30, 2018): 2897-2912. Accessed April 24, 2019. https://cirworld.com/index.php/jssr/article/view/7973.