Jopenbier
- https://pg4.pl/en/event/jopenbier-a-unique-experience - http://barclayperkins.blogspot.com/2017/07/danziger-jopenbier.html - http://barclayperkins.blogspot.com/2014/06/danziger-jopenbier-again.html - https://barclayperkins.blogspot.com/2008/02/danziger-joppenbier.html - http://www.europeanbeerguide.net/hollbrw2.htm#jopen - https://archiv.hobbybrauer.de/modules/name/eBoard/file/viewthread/thread/8738.html - https://scholar.google.com/scholar?hl=en&as_sdt=0%2C29&q=Saccharomyces+Beylink&btnG= - https://en.wikipedia.org/wiki/Zygosaccharomyces_bailii