Excitation on the para-Bose states: Nonclassical properties B. Mojaveri, A. Dehghani and R. Jafarzadeh Bahrbeig Eur. Phys. J. Plus, 133 9 (2018) 346 Published online: 03 September 2018 DOI: 10.1140/epjp/i2018-12163-2