N., G., Sharma, V. and Naresh, R. 2015. An oppositional learning based gravitational search algorithm for short term hydrothermal scheduling. Asian Journal of Current Engineering and Maths. 4, 3 (Jun. 2015), 45–54. DOI:https://doi.org/10.15520/ajcem.2015.vol4.iss3.30.pp45-54.