The effect of anisotropy on the thermodynamics of the interacting holographic dark energy model H. Hossienkhani, A. Jafari, V. Fayaz and A. H. Ramezani Eur. Phys. J. Plus, 133 2 (2018) 30 Published online: 01 February 2018 DOI: 10.1140/epjp/i2018-11850-2