Irreversible work and internal friction in a quantum Otto cycle of a single arbitrary spinSelçuk Çakmak, Ferdi Altintas, Azmi Gençten and Özgür E. MüstecaplıoğluEur. Phys. J. D, 71 3 (2017) 75DOI: https://doi.org/10.1140/epjd/e2017-70443-1