ABBA penalty shoot-out trial by Uefa - Dutch Referee Blog

ABBA penalty shoot-out trial by Uefa during Uefa Under 17 tournaments for women (in Czech Republic) and Men (in Croatia).

Penalty shootouts: Academics find fairer format, but will football accept it?

New penalty shootout system known as 'ABBA' to be trialled

Swedish Football

It was bang-average': The overturned Netherlands penalty left two Matildas in disbelief

case study Archives - Dutch Referee Blog

case study Archives - Dutch Referee Blog

New penalty format: Uefa to trial alternative 'ABBA' system for penalty shoot-outs, London Evening Standard

What is the ABBA penalty shootout format? The new spot-kicks system used at the Community Shield explained - Mirror Online

What is the ABBA penalty shootout format? The new spot-kicks system used at the Community Shield explained - Mirror Online