WALKER, K. Cost-comparison of DDT and alternative insecticides for malaria control. Medical and Veterinary Entomology, december 2000, roč. 14, čís. 4, s. 345–354. DOI: 10.1111/j.1365-2915.2000.00262.x. PMID 11129697. (po anglicky)
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ncbi.nlm.nih.gov
WALKER, K. Cost-comparison of DDT and alternative insecticides for malaria control. Medical and Veterinary Entomology, december 2000, roč. 14, čís. 4, s. 345–354. DOI: 10.1111/j.1365-2915.2000.00262.x. PMID 11129697. (po anglicky)