Matthew's current research focus is on contract law generally, as well as sales and consumer law.
- Barber M. and Todd S. (2020) The Laws of New Zealand: Contract reissue 1. : xcvi+506. LexisNexis. [Online and looseleaf].
- Barber M. (2019) Commercial Law in New Zealand (Consumer Guarantees Act 1993). LexisNexis. [Online commentary].
- Barber M. and Todd S. (2019) Commercial Law in New Zealand (Contract). LexisNexis. [Online commentary].
- Miller L. and Barber M. (2019) Understanding Commercial Law. (9 ed.). Wellington: LexisNexis. xlv+732.
- Todd SMD., Finn J. and Barber M. (2018) Burrows, Finn and Todd on The Law of Contract in NZ. (6th ed.). Wellington: Lexis Nexis. cxxix+971.