Strnadová V., Voborník P., Provazníková, K.: The research into the value system of secondary school and university students and the creation of an application for self-testing. Hradec Economic Days, February 2nd - 3rd 2016, Hradec Králové: Gaudeamus, 2016, pp. 1016-1024. ISBN 978-80-7435-636-0, ISSN 2464-6059.