Text Clarity; Ok.
References; missing references relate to the standards
The abstract is vague, I cannot see how its related with projects, programs or portfolios, and the relevance for project managers. The title mentions tool, but what is the purpose of the this tool?, Can be incorporated in PM processes? How?
Please elaborate how you can connect with the mentioned aspects, also try to see under which perspective (purpose, people, complexity, uncertainty) you can allocate the article.
Look also in the Mandatory References in the listed Reading material of the course.