1. Guineapig versus man in standardization of tuberculin;Edsall,1961
2. European Pharmacopoeia,1971
3. Standardization of a new batch of purified tuberculin (PPD) intended for international use;Guld;Bulletin of the World Health Organization,1958
4. Assessment of the potency of tuberculin in humans and guinea-pigs;Hansen;Bulletin of the World Health Organization,1964
5. Analyse approfondie des Expériences biologiques;Lellouch,1971