• Implementation of service-based e-government and establishment of state IT components interoperability at local authoritiesPappel, Ingrid; Pappel, Ingmar2011 3rd International Conference on Advanced Computer Control (ICACC 2011) : Harbin, China, 18-20.01.20112011 / p. 371-378 https://ieeexplore.ieee.org/document/6016434