Corriols Molina, Marianela I. Corriols M, Marín J, Berroteran J, Lozano LM, Lundberg I, Thörn A (2008). The Nicaraguan Pesticide Poisoning Register: constant underreporting. Int J Health Serv. 38(4): 773-87. ::pmid::19069292.
,
2009
United States. Congress. House. Committee on Government Reform Also available via Internet from the GPO Access web site. Addresses as of 8/21/02: http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=107%5Fhouse%5Fhearings&docid=f:77387.wais (text version), http://frwebgate.access.gpo.gov/cgi-bin/getdoc.cgi?dbname=107%5Fhouse%5Fhearings&docid=f:77387.pdf (PDF version); current access is available via PURLs..
,
2002