J. T. Visscher, G. C., G., et Fernandez, J.,
« Comparative study of different pre-treatment alternatives »,
Aqua : journal of water supply research and technology, p. p. 337-346: 7 fig., 5 tab., 1993.
G. G. C.,
« Innovative technology for reduction in biological contaminants and trihalomethane precursors », in
Safety of water disinfection : balancing chemical and microbial risks, 1993, p. P. 415-428: 10 fig., 3 tab.
J. T. Visscher, Beron, F., G. C., G., et Fernandez, J.,
« Pre-treatment alternatives for drinking water supply systems : selection, design, operation and maintenance », vol. no. 22. IRC, The Hague, The Netherlands, p. viii, 101 p.: 40 fig., 19 tab., 1993.
D. R. Munoz et H. Penaloza, C.,
« Residuos solidos ». Fundacion para la Investigacion sobre Residuos Solidos, Bogota, Colombia, p. 252 p.: fig., tab., 1993.