Linked from
The 80 pages that link to Quantum chromodynamics, each with the reason it gives.
Standard ModelBroader topic: It is the Standard Model’s strong-interaction sector.
Gauge theoryBroader topic: It shows how a non-abelian gauge theory produces the strong interaction.
Strong interactionBroader topic: It is the theory that mathematically describes this interaction.
QuantizationBroader topic: It applies field quantization to the strong nuclear interaction.