Defect solitons in nonlinear optical lattices with parity-time symmetric Bessel potentialsHongcheng Wang, Dongxiong Ling, Guihua Chen, Xing Zhu and Yingji HeEur. Phys. J. D, 69 1 (2015) 31DOI: https://doi.org/10.1140/epjd/e2014-50668-2