Bing found these results
Dennis Ritchie - Wikipedia
Dennis M. Ritchie | Biography & Facts | Britannica
Inductee Dennis Ritchie, Who Invented Unix, Transformed …
Dennis Ritchie - CHM
Dennis Ritchie, Trailblazer in Digital Era, Dies at 70
Dennis Ritchie Home Page - Bell Labs
Dennis Ritchie | Lemelson
Dennis Ritchie, father of Unix and C, dies | ZDNET
Dennis Ritchie obituary | Computing | The Guardian
Dennis Ritchie, Father of C and Co-Developer of Unix, Dies