How has the factors affected the following phases of PPP framework; PPP Enabling Environment; PPP Project Preparation Process; Bankable Feasibility Study; and Risk Identification and Allocation.
You can go through
Delivering the PPP promise*
A review of PPP issues and activity
A systematic framework for infrastructure development through public private partnerships
The following links might give you good reading PPP framework for assessing infrastructure development:
1. http://dx.doi.org/10.1016/j.iatssr.2012.11.001 (a paper published by sciencedirect)
2. https://www.oecd.org/dac/evaluation/IOBstudy378publicprivatepartnershipsindevelopingcountries.pdf (A systematic literature review on PPP in developing countries by OECD)
3. http://pubdocs.worldbank.org/en/773541448296707678/Disclosure-in-PPPs-Framework.pdf (by World bank)
4. http://www.undp.org/content/dam/uganda/img/Research%20and%20Publications/PPP%20Guidelines%20Final.pdf (by UNDP)
5. http://www.un.org/esa/desa/papers/2016/wp148_2016.pdf (by United Nations)
You may look at this source as well:
http://www.accaglobal.com/content/dam/acca/global/PDF-technical/public-sector/rr-126-001.pdf
or if you have access to this book
https://books.google.co.id/books?id=65j7CwAAQBAJ&pg=PR8&lpg=PR8&dq=marcus+ppp+pradono&source=bl&ots=4zAGs8GlRr&sig=SnGJoLdqf_1x2OwI5A7LvRyasUg&hl=id&sa=X&ved=0ahUKEwi90YmVvorPAhXBmpQKHfUOBGMQ6AEIHTAA#v=onepage&q=marcus%20ppp%20pradono&f=false