Metge, D W, Harvey, R W, Aiken, G R, Anders, R, Lincoln, G, and Jasperse, J, 2010, Influence of organic carbon loading, sediment associated metal oxide content and sediment grain size distributions upon Cryptosporidium parvum removal during riverbank filtration operations, Sonoma County, CA: Water Research, v. 44, iss. 4, p. 1126-1137.