What Birkenstock has that today's DTC brands don't
Birkenstock - History, Philosophy, and Iconic Products
From LSD to I.P.O., Birkenstock Bets Big on Its Global Empire - The New York Times
A Key to Birkenstock's Billion Dollar Success? Its Frumpiest Shoe – TextileFuture
Birkenstock Owner Considers IPO at $6 Billion-Plus Value, by RETAILBOSS
Birkenstock public debut 'the real test' for IPO market rebound
Birkenstock IPO tripped up by 'reckless' valuation, former LVMH chair says
A Visual History of Birkenstock's Rise, From Insoles to IPO - WSJ
Birkenstock: inside a $5bn brand
From frumpy sandal chic to mainstream appeal: will Birkenstock IPO be a perfect fit?, IPOs
Birkenstock: After IPO, Will San Francisco's Favorite Shoe Sell Its Soul?