Kulatunga, D.D.S.Kudo, A.Azuma, S.2015-09-142015-09-142000Kulatunga, D.D. Sarath, Kudo, Akio and Azuma, Shinji 2000. Approximate for the null distribution of a statistic caused by random combinations. Sri Lanka Journal of Applied Statistics, 1(1): 1-12.1391-4987http://repository.kln.ac.lk/handle/123456789/9545enArticle