精选优质文档-倾情为你奉上 外文文献：Project portfolio management Theres more to it thanwhat management enactsAbstractAlthough companies manage project portfolios concordantly with project portfolio theory, they may experience problems in the form of delayed projects, resource struggles, stress, and a lack of overview. Based on a research project compromised of 128 in-depth interviews in 30 companies, we propose that a key reason why companies do not do well in relation to project portfolio ma
