Quellen:

Foto 1: https://destinationsports.ch/sport-live-fussball-champions-league-yb-manchester-united/

Foto 2: https://sport.ch/superleague/450423/machen-die-basler-den-bernern-ihre-heilige-yb-viertelstunde-streitig

Silvan: https://www.fm1today.ch/thema/YB

Fans: https://www.watson.ch/sport/fussball/149569347-so-schwaermen-sie-in-england-von-der-gelben-yb-wand

Fans 2: https://www.derbund.ch/die-treuen-fans-im-sektor-d-699914480689