Cerroni S, Watson V, Kalentakis D, Macdiarmid JI. Value-elicitation and value-formation properties of discrete choice experiment and experimental auctions. Eur Rev Agric Econ. 2019 Feb;46(1):3-27. doi: 10.1093/erae/jby014
Lawson DH, Jick H, Rothman KJ. Coffee and tea consumption and breast disease. Surgery. 1981 Jan 1;90(5):801-3.