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© 2012 Elsevier. This is the post print version of the following article: Jelovica, Jasmin & Romanoff, Jani & Ehlers, Sören & Varsta, Petri. 2012. Influence of weld stiffness on buckling strength of laser-welded web-core sandwich plates. Journal of Constructional Steel Research. Volume 77. p. 12-18. DOI: 10.1016/j.jcsr.2012.05.001, which has been published in final form at http://www.sciencedirect.com/science/article/pii/S0143974X12001137.