Add test for et al. issue (#23)

tests/bibliography.bib

@@ -24,3 +24,20 @@ @misc{r20242
   howpublished = {R Foundation for Statistical Computing},
   keywords = {nosource}
 }
+
+@article{bolger2019,
+  ids = {bolgerCausalProcessesPsychology},
+  title = {Causal Processes in Psychology Are Heterogeneous.},
+  author = {Bolger, Niall and Zee, Katherine S. and Rossignac-Milon, Maya and Hassin, Ran R.},
+  date = {2019-04},
+  journaltitle = {Journal of Experimental Psychology: General},
+  volume = {148},
+  number = {4},
+  pages = {601--618},
+  issn = {1939-2222, 0096-3445},
+  doi = {10.1037/xge0000558},
+  url = {http://dx.doi.org/10.1037/xge0000558},
+  urldate = {2019-04-25},
+  abstract = {All experimenters know that human and animal subjects do not respond uniformly to experimental treatments. Yet theories and findings in experimental psychology either ignore this causal effect heterogeneity or treat it as uninteresting error. This is the case even when data are available to examine effect heterogeneity directly, in within-subjects designs where experimental effects can be examined subject by subject. Using data from four repeated-measures experiments, we show that effect heterogeneity can be modeled readily, that its discovery presents exciting opportunities for theory and methods, and that allowing for it in study designs is good research practice. This evidence suggests that experimenters should work from the assumption that causal effects are heterogeneous. Such a working assumption will be of particular benefit, given the increasing diversity of subject populations in psychology.},
+  langid = {english}
+}

tests/citations-et-al.qmd

@@ -0,0 +1,28 @@
+---
+title: "Citations drop et al after first occurrence?"
+author:
+  - name: Matti Vuorre
+    email: [email protected]
+    orcid: 0000-0001-5052-066X
+    url: https://www.tilburguniversity.edu/staff/m-j-vuorre
+    corresponding: true
+    affiliation:
+      - ref: 1
+affiliations:
+  - id: 1
+    name: Tilburg University
+    department: Department of Social Psychology
+format:
+  preprint-typst: default
+bibliography: bibliography.bib
+suppress-bibliography: true
+---
+
+```{r} 
+quarto::quarto_version()
+```
+
+
+This should say et al @bolger2019.
+
+This should say et al @bolger2019.