https://realassets.ipe.com/news/warburg-pincus-backed-esr-postpones-us124bn-hong-kong-ipo/realassets.ipe.com/news/warburg-pincus-backed-esr-postpones-us124bn-hong-kong-ipo/10031685.fullarticle

https://realmoney.thestreet.com/investing/slack-looks-poised-for-a-red-hot-ipo-perhaps-too-hot-14990202

https://www.fnlondon.com/articles/brexit-keeps-uk-ipo-market-stuck-in-worst-slump-since-crisis-20190613