TY - RPRT TI - Least square multiple classification for unequal subgroups. AU - P HORST PY - 1956 DO - 10.1002/1097-4679(195610)12:4<309::aid-jclp2270120402>3.0.co;2-k UR - https://pubmed.ncbi.nlm.nih.gov/13367214/ ID - 13367214 ER -