European research on socio-economic barriers to sustainable mobility : a report prepared for the first Mobidays - Sustainadle Mobility Days - conference in Prague, June 18, 2007 / Vojtěch Máca, Hana Brůhová-Foltýnová .  Prague :  Charles University Environment Center in Prague,  2007 .  37 s.   [1, z toho volných 1]