Bulgarie
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Partov, Doncho / Dinev, Dobromir (2013): Bridge Engineering in Bulgaria. Dans: Chen, Wai-Fah (2013): Handbook of International Bridge Engineering. CRC Press, Boca Raton (États-Unis), ISBN 978-1439810293, pp. 247-293.
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Dulevski, Encho (2008): Four Pedestrian Bridges In Bulgaria – Design And Construction. Présenté pendant: Footbridge 2008 - Footbridges for Urban Renewal, Third International Conference on Footbridges, 2-4 July 2008, Porto, Portugal, pp. 145-146.
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Naudascher, Eduard / Dimitrov, Dimitar S. (2007): Geschichte des Betonbaus in Bulgarien. Dans: Beton- und Stahlbetonbau, v. 102, n. 8 (août 2007), pp. 564-567.
https://doi.org/10.1002/best.200708204