I have changed the headings for these sections to better reflect the content. They read as follows: 2.
The literature part is improved by changing the headline, putting it in the right setting. The change illustrates how headlines can change the apperance of the text contents. However, I cannot see how chapter 2.2. is a sub-theme under the Ostrom Principles? If they are - the connection need explainnig. If they are not, the main headling Chapter 2 should be reformulated again.