1. Maximizing the correlation of grouped observations;Boringer;J. Am. Stat. Theor.,1970
2. Making Hard Decision: An Introduction to Decision Analysis;Clemen,1991
3. A note on grouping;Cox;J. Amer. Statist. Assoc.,1957
4. Bootstrap methods: another look at the jacknife;Efron;Ann. Statist.,1979
5. The problem of selecting a given number of representative points in a normal population and a generalized mill’s ratio. Technical Report;Fang,1982