@inproceedings{BienHelmerichNiederleithingeretal.2009, author = {J. Bien and Rosemarie Helmerich and Ernst Niederleithinger and Z. Kubiak}, title = {Condition assessment of old railway bridges, a scientific cooperation between Berlin and Wroclaw}, booktitle = {3rd international congress on construction history (Proceedings)}, volume = {1}, pages = {205 -- 211}, year = {2009}, }