Reviewing the costs of multichannel elections : Estonian parliamentary elections 2019Krivonosova, Iuliia; Duenas Cid, David; Krimmer, Robert JohannesFifth International Joint Conference on Electronic Voting : E-Vote-ID 2020, 6-9 October 2020 : proceedings2020 / p. 356-357https://digikogu.taltech.ee/et/Item/593d1e1a-9bbc-439b-afdc-f72abfcc8afa