1. The distribution and frequency of record values;Chandler;J. R. Statist. Soc., B,1952
2. Rank correlation and population models;Daniels;J. R. Statist. Soc., B,1950
3. Consistency and unbiasedness of certain non-parametric tests;Lehmann;Ann. Math. Statist.,1951
4. Non-parametric tests against trend;Mann;Econometrica,1945