1. The dipyridylium herbicides, paraquat and diquat;Akhavein;Residue Rev.,1968
2. Paraquat poisoning;Burman;Lancet,1972
3. The toxicity of paraquat;Clark;Brit. J. Ind. Med.,1966
4. Production and viability of eggs from hens treated with paraquat;Fletcher;Nature,1967
5. Comparative dietary toxicities of pesticides to birds. Special Scientific Report—Wildlife No. 152.;Heath,1972