Bęben, Damian. “Experimental Tests of Railway Culvert Made from Corrugated Plates under Service Loads Using Interferometric Radar”. Roads and Bridges - Drogi I Mosty, vol. 10, no. 1-2, Apr. 2011, pp. 5-20, https://rabdim.pl/index.php/rb/article/view/v10n1-2p5.