Sources
edit- https://archive.org/details/PC.Games.N082.1999.07-fl0n/page/n75
- http://archive.vn/Qv9JQ
- https://archive.org/stream/computerhoy004/computer%20hoy%20057#page/n135/mode/2up
- https://web.archive.org/web/20060524044503/http://www.pcgames.de/?product_id=16202
- https://web.archive.org/web/20150515115226/https://www.gameswelt.de/jowood-entertainment-ag/news/kooperation-mit-snowball-interactive,62280
- https://web.archive.org/web/20150912151815/http://www.4players.de/4players.php/dispbericht/PC-CDROM/Special/1051/253/0/Die_Voelker_2.html
- https://web.archive.org/web/20181202032438/https://www.gamestar.de/artikel/jowood-in-russland,1336864.html
- https://web.archive.org/web/20181202033039/https://www.redbull.com/at-de/games-aus-oesterreich-teil-1
- https://derstandard.at/247922/Oesterreichische-Computerspiele-im-internationalen-Rampenlicht
- https://web.archive.org/web/20181202180537/http://www.gamesauce.biz/2013/01/14/cliffhanger-productions-michael-paeck-on-creating-a-successful-game-moving-on-from-a-project-and-using-kickstarter/
- https://archive.org/details/PC-Player-German-Magazine-1999-07/page/n61
- https://archive.org/details/PC.Games.N080.1999.05-fl0n/page/n73
- https://web.archive.org/web/20010617130803/http://www.gamezone.com/gamesell/p13280.htm