Penalty shootouts: EFL to trial 'ABBA' format in 2017-18 - BBC Sport

The "ABBA" format for penalty shootouts will be implemented in all English Football League competitions in 2017-18.

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

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

What's on TV Magazine - 2023-09-05

ABBA penalty shootout trials yield a more fair, balanced format - Sports Illustrated

2017–18 Yeovil Town F.C. season - Wikipedia

The 5 worst things about the new ABBA penalty shoot-out as Arsenal win Community Shield in bizarre fashion - Mirror Online

The 5 worst things about the new ABBA penalty shoot-out as Arsenal win Community Shield in bizarre fashion - Mirror Online

The fairness of long and short ABBA-sequences: A basketball free-throw field experiment - ScienceDirect

League Cup 2018/19 (Carabao Cup)

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

Nottingham Forest to use new 'ABBA' style penalty shoot-out after Football League backs trial - Nottinghamshire Live

Euro Weekly News - Costa del Sol 16 - 22 March 2017 Issue 1654 by Euro Weekly News Media S.A. - Issuu