C. J. Brouckaert, Foxon, K. M., y Wood, K.,
«Modelling the filling rate of pit latrines : a paper presented at the second conference on developments in faecal sludge management in Durban, South..», presented at the 2012-10-29, S.l., 2012, Draft Submitted to Water SA – September 2012.ª ed., p. 13 p.; 11 fig.; 2 tab.