https://dds.las.ac.cn/service/document?appId=a1vacbnPuv9qJRzJvdNXfsesj9JbIa6e&appKey=sPBA4vANLzjnW1k5eufEcc4k7dxfNraW&ts=1763023127386&signature=75f75b745c2a157f7c670fc85e21691a&articleTitle=Minimax+Solutions+in+Sampling+from+Finite+Populations&articleAuthor=Siegfried+Gabler&publicationTitle=Minimax+Solutions+in+Sampling+from+Finite+Populations&language=&publicationType=1&publishYear=1990&isn=9780387973586&publisher=Springer+New+York