Xu Kefeng: Visegrad Group marching into its thirties : consistency and evolution. In: Acta Universitatis Szegediensis : forum : publicationes doctorandorum juridicorum, (11). pp. 49-57. (2021)
Xu Kefeng: Visegrad group in post-Brexit EU : scenarios and options. In: Acta Universitatis Szegediensis : forum : publicationes doctorandorum juridicorum, (10). pp. 79-86. (2020)