%\cite{Rodriguez-Fernandez:FEL2015-TUP022} \bibitem{Rodriguez-Fernandez:FEL2015-TUP022} A.~Rodriguez-Fernandez, K.~Finkelstein, B.~Pedrini, and S.~Reiche, \textquotedblleft{Measurement of Spatial Displacement of X-rays in Crystals for Self-Seeding Applications}\textquotedblright, % in \emph{Proc. FEL2015}, TUP022, pp. 405--408, % in \emph{Proc. FEL2015}, Daejeon, Republic of Korea, August 2015, paper TUP022, pp. 405--408, in \emph{Proc. 37th International Free Electron Laser Conference (FEL2015)}, Daejeon, Republic of Korea, August 2015, paper TUP022, pp. 405--408, ISBN: 978-3-95450-134-2, \url{http://accelconf.web.cern.ch/AccelConf/FEL2015/papers/tup022.pdf}, doi:10.18429/JACoW-FEL2015-TUP022, 2015.