Harnessing ‘Blue energy’: A Review on Techniques and Preliminary AnalysisKhairul Nisak Md Hasan, Tian Xian Khai, Ramani Kannan and Zainul Azhar ZakariaMATEC Web Conf., 131 (2017) 04013DOI: https://doi.org/10.1051/matecconf/201713104013