J. A. Goodrich, Lykins, B. W., Campbell, S., Post, D., y Lay, T.,
«Package plants for small systems : a field study»,
Journal American Water Works Association, pp. p. 39-47: 6 fig., 5 tab., photogr., 1995.
B. W. Lykins, Astle, R., Schlafer, J. L., y Shanaghan, P. E.,
«Reducing fluoride by managed POU treatment»,
Journal American Water Works Association, pp. p. 57-65: 4 fig., 9 tab., photogr., 1995.