Rutherford, D W, Bednar, A J, Garbarino, J R, Needham, R, Staver, K W, and Wershaw, R L, 2003, Environmental fate of roxarsone in poultry litter. Part II. Mobility of arsenic in soils amended with poultry litter: Environmental science & technology, v. 37, iss. 8, p. 1515-1520.