1. Actively acquired tolerance of foreign cells;Billingham;Nature,1953
2. Actively acquired tolerance of foreign cells in newborn animals;Billingham;Proc R Soc (Lond),1956
3. Quantitative studies on tissue transplantation immunity. IV. Induction of tolerance in newborn mice and studies on the phenomenon of runt disease;Billingham;Philos Trans (Biol Sci),1959
4. Quantitative studies on tissue transplantation immunity. III. Actively acquired tolerance;Billingham;Philos Trans (Biol Sci),1956
5. A discussion on immunological tolerance;Medawar;Proc R Soc (Lond),1956