Kostecki, Billingham and Bayliss World Champion Soling 1988
International Soling Association
CC BY-SA 4.0
<a rel="nofollow" class="external free" href="https://www.soling.com/solingsailing/1988-vol16-no1-SolingSailing.pdf">https://www.soling.com/solingsailing/1988-vol16-no1-SolingSailing.pdf</a>