Kulshreshtha, S.N. A Global Outlook for Water Resources to the Year 2025 // Water Resources Management 12 (3). 1998. DOI:10.1023/A:1007957229865. с. 167 – 184. Посетен на 9 юни 2008.
S. J. Hirst, N. A. Hayes, J. Burridge, F. L. Pearce, J. C. Foreman, Human basophil degranulation is not triggered by very dilute antiserum against human IgE, Nature 366, p. 525 – 527 (9 декември 1993) [1]
((en))UNEP International Environment (2002). Environmentally Sound Technology for Wastewater and Stormwater Management: An International Source Book. IWA Publishing. ISBN 1-84339-008-6. OCLC./49204666