DIN EN 16271-2013 价值管理.需求和功能性能规范的函数式.购买或获取一个产品的过程内需求满意度表达和确认要求.德文版本EN 16271-2012
Value management - Functional expression of the need and functional performance specification - Requirements for expressing and validating the need to be satisfied within the process of purchasing or obtaining a product; German version EN 16271:2012