Renken, R A, Cunningham, K J, Zygnerski, M R, Wacker, M A, Shapiro, A M, Harvey, R W, Metge, D W, Osborn, C L, and Ryan, J N, 2005, Assessing the Vulnerability of a Municipal Well Field to Contamination in a Karst Aquifer: Environmental & Engineering Geoscience, v. 11, iss. 4, p. 319-331.