Chaudhuri, PChakraborty, BimanOja, H2012-05-102012-05-101998Statistics sinica,V8,P767-784http://hdl.handle.net/10263/3933enAffine transformationEfficiencyElliptically symmetric distributionEquivarient estimateInvariant testMultivariant sign testOpening transformation retransformation on spatial median and angle testArticle