Acoustic spectrum analysis of genuine and counterfeit euro coinsGavrijaševa, Alina; Märtens, Olev; Land, RaulElektronika ir elektrotechnika = Electronics and electrical engineering2015 / p. 54-57 : ill Coin validation by electromagnetic, acoustic and visual features = Mündi valideerimine elektromagnetiliste, akustiliste ja visuaalsete tunnuste järgiGavrijaševa, Alina2015 https://digi.lib.ttu.ee/i/?2408 Image based counterfeit coin validationGavrijaševa, Alina; Märtens, OlevBEC 2014 : 2014 14th Biennial Baltic Electronics Conference : proceedings of the 14th Biennial Baltic Electronics Conference : Tallinn University of Technology, October 6-8, 2014, Tallinn, Estonia2014 / p. 153-156 : ill TTÜ leiutis sai ka Euroopa patendi : [leiutis euromüntide ehtsuse tuvastamiseks ja tervisehäirete diagnoosimiseks : töögrupp Mart Min, Raul Land, Toomas Parve, Andres Kink]HEI = Hea Eesti Idee2011 / jaan., lk. 8