Birkenstock tripped over its own sandals trying to take a step in
German sandal maker Birkenstock heads to US stock market – DW – 09
Shoemaker Birkenstock Expected to IPO in September - luckbox magazine
Birkenstock preps for IPO
Wall Street Deems Birkenstock a 'Comfortable' Fit for Investor
Shoemaker Birkenstock Expected to IPO in September - luckbox magazine
Birkenstock IPO: Is it worth $10B? - by Trungphan2
Birkenstock IPO: German sandal brand could be worth $10 billion
Birkenstock IPO Leaves No Room for Wardrobe Malfunction - Bloomberg
How Birkenstock went from world's ugliest shoe to billion dollar