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www.skycash.com
SkyCash – an application available for devices with Android, iOS and Windows Phone enabling the acquisition of PR train tickets, under the terms of SkyCash Regulations.
Download SkyCash application below.
Got to www.skycash.com > 
www.koleo.pl
Download the KOLOEO app and purchase single tickets. Previous registration is rewiuered. Details can be found in the KOLEO Regulations.
Go to www.koleo.pl > 