1. Birks P (2005) Unjust enrichment, 2nd edn. Oxford University Press
2. Brownsword R (2000) Contract law: themes for the twenty-first century. Butterworths
3. Burrows A (2004) The English law of restitution: a ten-year review. In: Neyers JW, McInnes M, Pitel SGA (eds) Understanding unjust enrichment. Hart Publishing
4. Burrows A (2012) A restatement of the English law of unjust enrichment. Oxford University Press
5. Chambers R, Mitchell C, Penner J (eds) (2009) Philosophical foundations of the law of unjust enrichment. Oxford University Press