A Holistic Review of Public-Private Partnership Literature Published between 2008 and 2018

Table 2

Summaries of most frequently studied keywords in PPP.

Studied keywords	Total link strength	Frequency	Average year published	Average citations
Risk Allocation and Management (RAM)	88	132	2013	12
Infrastructure	88	124	2014	11
Procurement	36	47	2013	13
Mainland China	34	43	2014	20
Financing	30	42	2013	9
Concession	26	37	2014	6
Sustainability	23	37	2016	3
Critical Success Factors	20	32	2015	13
Value for Money	20	32	2013	9
Developing Countries	25	30	2015	4
Transportation	18	29	2015	5
Government	19	27	2015	5
Real Option	19	27	2014	11
Contracting	15	26	2015	4
Australia	25	25	2013	11
Roads	17	24	2014	10
Water Sector	21	24	2012	7
Governance	13	23	2015	4
Case Study	11	18	2015	9
India	14	17	2014	6
Hong Kong	15	16	2013	15
Stakeholder	12	16	2015	10
Game Theory	9	14	2016	3
Monte Carlo Simulation	9	13	2016	5
Ghana	7	12	2017	3
Innovation	6	11	2015	6