LUBYOVÁ, Martina - SODOMOVÁ, Eva. Participation in non-formal lifelong learning in the Czech Republic, Poland and Slovakia: empirical evidence from adult education survey. In Quantitative methods in socio-economic analysis. Scientific seminar. Quantitative methods in socio-economic analysis : 19th slovak-polish-ukrainian scientific seminar : october 23 - 27, 2012, Svätý Jur, AGAPÉ Slovakia. - Bratislava : Vydavateľstvo EKONÓM, 2014. ISBN 978-80-225-3831-2, s. 11-30. Project: LLLight in Europe.