Analytical computation of nonclassical behavior for asymmetric two two-level atoms interacting with SU(1,1) quantum systemAbdallah A. Nahla, Mohamed M.A. Ahmed and Sultan Z. AlamriEur. Phys. J. D, 73 3 (2019) 44DOI: https://doi.org/10.1140/epjd/e2019-90395-6