Stichting Mathematisch Centrum
Stichting Mathematisch Centrum. Statistische Afdeling

van der Laan, P. (1963). A sequential distribution-free two-sample grouped test with three decisions : Paper presented at the International biometric conference, Cambridge 1963. In Stichting Mathematisch Centrum. Statistische Afdeling (S 315/63). Stichting Mathematisch Centrum.