New ABBA penalty shootout system to be tested

UEFA are to test a new penalty shootout at the European Under-17 Championship, with a view to implementing it going forward in all competitions.The

ABBA penalty shootout trials yield a more fair, balanced format

World Cup 2018: Why extra time, penalties need to be changed

Even with the ABBA format, penalty shootouts remain a lottery

World Cup penalty shootout rules: How it works, ABBA system or

U.S. knocked out of World Cup after falling to Sweden in PKs - Los

Penalty shoot-out (association football) - Wikipedia

From Galileo to penalty shootouts: data, economics and human behaviour

Under-20 World Cup: Fifa trial new penalty shootout system known

UEFA set to test new 'ABBA' format for penalty shootouts

How to win a penalty shootout: prepare, be smart – and win the

Penalty shootouts: Academics find fairer format, but will football

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

World Cup 2018: Why extra time, penalties need to be changed

A comparison of penalty shootout designs in soccer