Linked from
The 18 pages that link to Triple-alpha process, each with the reason it gives.
Nuclear astrophysicsBroader topic: It explains how stars make carbon from helium.
Helium-4Broader topic: It consumes helium-4 as the fuel for carbon production in evolved stars.
B2FH paperBroader topic: It accounts for carbon production during helium burning.
Helium burningBroader topic: This is the principal route by which helium burning builds carbon.