LiG., ZhangY., SchindelG. M., FieldM. S., and GoldscheiderN. “Rayleigh Wave and Well Head Response to Calculate Porosity in the Edwards Aquifer of South-Central Texas, USA”. Acta Carsologica, Vol. 49, no. 2-3, Dec. 2020, doi:10.3986/ac.v49i2-3.8849.