1. Collaborative study for the calibration of a replacement international standard for tetanus toxoid adsorbed;Tierney;Biologicals,2011
2. Assay of Tetanus vaccine adsorbed (2.7.8), Method of analysis. European pharacopoeia,2018
3. WHO Expert Committee on Biological Standardisation, Recommendations for diphtheria, tetanus, pertusis and combined vaccines;WHO;WHO Tech Rep Ser,2005
4. Tierney R, Hockley J, Rigsby P, Sesardic D. International collaborative study: calibration of replacement WHO international standard for tetanus toxoid adsorbed. WHO/BS/10.2150 https://apps.who.int/iris/bitstream/handle/10665/70580/WHO_BS_10.2150_eng.pdf.
5. Calibration of the Ph. Eur. Biological Reference Preparation (BRP) for tetanus vaccine (adsorbed) batch 3;Tierney;Pharmeuropa Bio Sci Notes,2011