@conference {3484,
	title = {Sensitivity Analysis of Track Vibrations due to Vertical Stiffness Variation in High-Speed Railways},
	booktitle = {Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN},
	year = {2007},
	address = {Rethymno, Crete},
	author = {Z. Dimitrovov{\'a} and Varandas, J.N. and Almeida, J.R. and Silva, M. A. G.}
}
