Productive ageing : conditions and opportunities : a monograph / Iva Holmerová, Monica Ferreira, Petr Wija et al. .  Prague :  International Longevity Centre Czech Republic : Centre for Expertise in Longevity and Long-term Care : Faculty of Humanities, Charles University ;  2012 .  103 s., [24] s. obr. příl.   [1, currently available 1]