DOC: link to Chung reference

ComPWA · Dec 13, 2023 · b7d3bf1 · b7d3bf1
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diff --git a/docs/report/024.ipynb b/docs/report/024.ipynb
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     "tags": []
    },
    "source": [
-    "Now, let's build up a more complicated expression that contains this phase space factor. Here, we use SymPy to derive a Breit-Wigner using a single-channel [$K$ matrix](https://doi.org/10.1002/andp.19955070504):"
+    "Now, let's build up a more complicated expression that contains this phase space factor. Here, we use SymPy to derive a Breit-Wigner using a single-channel [$K$ matrix](https://doi.org/10.1002/andp.19955070504) {cite}`chungPartialWaveAnalysis1995`:"
    ]
   },
   {