W. van der Hoek, Konradsen, F., Mudasser, M., Nielsen, M., y Hoogvorst, A.,
Childhood diarrhea and hygiene : mothers' perceptions and practices in the Punjab, Pakistan, vol. No. 25. Colombo, Sri Lanka: International Water Management Institute (IWMI), 2001, p. v, 29 p. : photogr., 1 tab.
W. van der Hoek, Konradsen, F., Ensink, J. H. J., Mudasser, M., y Jensen, P. K.,
«Irrigation water as a source of drinking water : is safe use possible?»,
Tropical medicine and international health, pp. p. 46-54 : 6 tab., 2001.