Photon-added entangled Barut–Girardello coherent states: non-classicality and generationA. Dehghani, B. Mojaveri, R. Jafarzadeh Bahrbeig and M. VaezEur. Phys. J. Plus, 135 2 (2020) 258DOI: https://doi.org/10.1140/epjp/s13360-020-00175-4