Title information : 9th International scientific conference VSU 2009.Vol. 1 : Proceedings,Sofia,Bulgaria,4.-5.6.2009 Issue data : Sofia : L.Karavelov Civil engineering higher school Sofia, 2009 ISBN : ISBN 978-954-331-023-4 Document kind : zborník (príspevkov) References : \q2479**1 stu_us_cat*stu192669*xcla \q (9) - článok