https://1drv.ms/f/s!AhsAAcVaEkSlnt4wDV4vzRMiwmiwXQ

https://en.wikipedia.org/wiki/Slovakia

https://cs.wikipedia.org/wiki/Plzeňský_kraj

https://www.nbs.sk/sk/statisticke-udaje/kurzovy-listok/grafy-kurzov/_CZK

https://volbysr.sk/sk/download.html