Carr, RM; Blumenthal, UJ; Mara, DD; (2004) Guidelines for the safe use of wastewater in agriculture: revisiting WHO guidelines. Water science and technology, 50 (2). pp. 31-38. ISSN 0273-1223 https://researchonline.lshtm.ac.uk/id/eprint/6149 Full text not available from this repository.

Mara, DD; Sleigh, PA; Blumenthal, UJ; Carr, RM; (2007) Health risks in wastewater irrigation: Comparing estimates from quantitative microbial risk analyses and epidemiological studies. Journal of water and health, 5 (1). pp. 39-50. ISSN 1477-8920 DOI: https://doi.org/10.2166/wh.2006.055 Full text not available from this repository.