E. K. Bashkirov, E. V. Grishina, E. Yu. Sochkova, “Atom-field entanglement for Jaynes-Cummings model with an intensity-depend coupling”, Vestn. Samar. Gos. Tekhn. Univ., Ser. Fiz.-Mat. Nauki [J. Samara State Tech. Univ., Ser. Phys. Math. Sci.], 2(31) (2013), 169–176
