Enhancement of the e-invoicing systems by increasing the efficiency of workflows via disruptive technologiesGunaratne, Hiruni; Pappel, IngridElectronic Governance and Open Society: Challenges in Eurasia : 7th International Conference, EGOSE 2020, St. Petersburg, Russia, November 18-19, 2020 : proceedings2020 / p. 60-74 https://doi.org/10.1007/978-3-030-67238-6_5 Conference proceeding at Scopus Article at Scopus

Implementation of e-invoicing principles in Estonian local governmentsPappel, Ingrid; Pappel, Ingmar; Tampere, Terje; Draheim, DirkProceedings of the 17th European Conference on Digital Government (ECDG) : Military Academy, Lisbon, Portugal, 12-13 June 20172017 / p. 127-135 : ill http://www.scopus.com/inward/record.uri?eid=2-s2.0-85028462055&partnerID=40&md5=90db5a1632aa8070dc9d7ae92357ae5f