Diggle, Peter J., Liang, Kung-Yee and Zeger, Scott L. (1994),
Analysis of longitudinal data, Oxford University Press,
Oxford.
Details
Diggle, Liang, and Zeger (1994) describe data on the protein content
of cows' milk in the weeks following calving. The cattle are grouped
according to whether they are fed a diet with barley alone, with
barley and lupins, or with lupins alone.