Otairu, A. and Umar, A.A. and Zawawi, N.A.A. and Pakir, A.H.K. (2013) Public sector perception of barriers to the use of public-private partnerships (PPP) in nigeria-findings from a questionnaire survey. Research Journal of Applied Sciences, Engineering and Technology, 5 (9). pp. 2809-2820. ISSN 20407459