BlackBerry's success led to its failure - The Verge

BlackBerry Z10 fails to impress tech gurus, investors-Tech News , Firstpost

850,000 BlackBerry devices were shipped in 2017 - News

BlackBerry sold 850,000 Keyone units and declares 'mission accomplished,' aims to capture 3% of smartphone market

The 3 Reasons BlackBerry Failed Spectacularly—and Why They Might Rise Again

Why BlackBerry failed, Charles Arthur

What causes Blackberry to vanish from the market? - Quora

The Bonfire of Innovation — How arrogance kills large organizations, by Stéphane Nasser

Victim of Success: The Rise and Fall of BlackBerry - Knowledge at Wharton

BlackBerry - The Verge