Renewable and Sustainable Energy ReviewsVolume 90, July 2018, Pages 570-582RETRACTED: Biogas production–A review on composition, fuel properties, feed stock and principles of anaerobic digestionAuthor links open overlay panelB. Bharathiraja a, T. Sudharsana a, J. Jayamuthunagai b, R. Praveenkumar c, S. Chozhavendhan d, J. Iyyappan aShow moreShareCitehttps://doi.org/10.1016/j.rser.2018.03.093Previous article in issueNext article in issueCited by (0)View Abstract© 2018 Elsevier Ltd. All rights reserved.