@doctoralThesis{Sridaran Venkat_2018, title={A Structural Health Monitoring Concept on Ultrasonic Based Assessment of Aged Structures with Isotropic and Anisotropic Material Properties}, author={Sridaran Venkat, Ramanan}, doi={http://dx.doi.org/10.22028/D291-27790}, adress={Saarbrücken}, year={2018} }