@article{Shlyapnikov2018world,
author={Shlyapnikov, V.V.},
title={WORLD HAPPINESS RANKING FROM THE UNITED NATIONS},
journal={Psychological and pedagogical problems of human and social security},
publisher={Saint-Petersburg University of State Fire Service of Emercom of Russia},
year={2018},
pages={5-7},
volume={2018},
issue={3},
}