TZOBRAS, Othon. Steel structures used in bridge engineering. Bratislava : STU v Bratislave SvF, 2013. Available on Internet: <http://is.stuba.sk/zp/portal_zp.pl?podrobnosti=85595> <https://opac.crzp.sk/?fn=detailBiblioForm&sid=EE95B465952BB5C00E0640B19651> V*