1. Chetley A. A drug no-one needs. Health Action International, 1993. http://www.bukopharma.de/uploads/file/Archiv/Dipyrone-ADrugNo-oneNeeds.pdf
2. Delays in the post-marketing withdrawal of drugs to which deaths have been attributed: a systematic investigation and analysis;Onakpoya;BMC Med,2015
3. Significance of FRG metamizole move;Anonymous;Scrip,1987
4. NSAI changes in Japan;Anonymous;Scrip,1986
5. Non-haemopoietic reactions to dipyrone containing compounds;Thomas;Eur J Pharmacol,1990