J. P. Padmasiri, Fonseka, W. S. C. A., Jayalath, J. M. J. C., Kulasooriya, S. A., y Jayaweradena, B. P. A.,
«Horizontal roughing filter as pretreatment system for Algae Synedra»,
Water supply : the review journal of the International Water Supply Association, pp. p. 201-204: 2 fig., 2 tab., 1995.
