Once only principle : benefits, barriers and next stepsWimmer, Maria A.; Tambouris, Efthimios; Krimmer, Robert Johannes; Gil-Garcia, J. Ramon; Chatfield, Akemi Takeokadg.o 2017 : the proceedings of the 18th Annual International Conference on Digital Government Research : Innovations and Transformations in Government : June 7-9, 2017, Staten Island, NY, USA2017 / p. 602-603 : ill https://doi.org/10.1145/3085228.3085296 Conference proceedings at Scopus Article at Scopus Article at WOS