ROZBORILOVÁ, Dária. Wealth, poverty and happiness in the context of the difficult conditions of the early 21st century. In 1st international M-Sphere conference for multidisciplinarity in science and business : book of proceedings : Dubrovnik, Croatia 4th-6th October 2012. - Dubrovnik : Accent, 2012. ISBN 978-953-7930-00-4, pp. 477-489 [online]. VEGA 1/0174/11, ITMS 26240120032. Dostupné na : <https://issuu.com/tvranes/docs/book_of_proceedings_part_2/135>