Yordkayhun, S., Juhlin, C., Giese, R., Cosma, C. (2007): Shallow velocity-depth model using first arrival traveltime inversion at the CO2SINK site, Ketzin, Germany. - Journal of Applied Geophysics, 63, 2, 68-79.https://doi.org/10.1016/j.jappgeo.2007.05.001