Das, ADey, A2013-08-162013-08-161991Metrika,v.38,no.1, p. 227-238http://hdl.handle.net/10263/5562enOptimal varianceOne- and two-way eliminationHeterogeneityE-optimalNon-binary efficiencyOptimal variance- and efficiency-balanced designs for one- and two-way elimination of heterogeneityArticle