Media type: E-Article Title: A Line Integral Perturbative Approach to the Computation of Cutoff Frequencies in Deformed Waveguides Contributor: Gentili, Gian Guido; Pelosi, Giuseppe; Selleri, Stefano imprint: Institute of Electrical and Electronics Engineers (IEEE), 2015 Published in: IEEE Microwave and Wireless Components Letters Language: Not determined DOI: 10.1109/lmwc.2015.2427579 ISSN: 1531-1309; 1558-1764 Keywords: Electrical and Electronic Engineering ; Condensed Matter Physics Origination: Footnote: