There's also this for counterfeit ballots:
Article from the International Journal of Theoretical Physics (2019):
https://link.springer.com/article/10.1007/s10773-018-3929-6
There's also this for counterfeit ballots:
Article from the International Journal of Theoretical Physics (2019):
https://link.springer.com/article/10.1007/s10773-018-3929-6