@article{Zheng2013, author = "Wei Zheng and Zeng-Qiang Yu and Xiaoling Cui and Hui Zhai", title = "{Bogoliubov spectrum for Ω/Er = 2, 4 and 6 for (a)–(c)}", year = "2013", month = "6", url = "https://iop.figshare.com/articles/figure/_Bogoliubov_spectrum_for_em_E_sub_r_sub_em_2_4_and_6_for_a_c_/1012032", doi = "10.6084/m9.figshare.1012032.v1" }