Retraction Note: Energy Efficiency

https://doi.org/10.1007/s12053-015-9373-z

The Editor-in-Chief has retracted this article (Naji et al. 2016a) because validity of the content of this article cannot be verified. This article showed evidence of substantial text overlap (most notably with the articles cited (Naji et al. 2014, 2016b; Akib et al. 2015)), peer review and authorship manipulation. None of the authors agree to this retraction.