A 1957 study by the Los Alamos National Laboratory reported a less effective recovery than the traditional method, while a more recent study sponsored by the United States Office of Scientific and Technical Information found it to be one of the more effective methods.
一项1957年洛斯阿拉莫斯国家实验室的研究表明这比传统方法效率低一些，而晚些年美国科技信息办公室的研究表明这是最有效的方法之一。