title: R markdown - how can I remove additional brackets around year in cited articles?
body: <p>I'm preparing a document in which I cite more than one article. I wish to place all of them in one brackets, for example:</p>
  
  <p>It was mentioned in (article1; article2;, article 3).</p>
  
  <p>Unfortunately I noticed that RMarkdown adds brackets around year:</p>
  
  <p><a href="https://i.stack.imgur.com/9vLk9.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/9vLk9.png" alt="brackets around year"></a></p>
  
  <p>How can I remove them?</p>
  
  <p>My document:</p>
  
  <pre><code>---
  title: Additional brackets around year in citations
  author:
    - name: Mateusz Kędzior
      email: alice@sample.com
      affiliation: WUT
      footnote: Corresponding Author
  abstract: |
    First line
  
    The second line
  
  keywords: some \sep thing \sep some \sep where
  bibliography: listb.bib # I get .bib file from http://shelah.logic.at/eindex.html
  csl: elsevier-harvard.csl # I get style from: https://www.zotero.org/styles/
  link-citations: true
  
  output:
     bookdown::pdf_book:
      base_format: rticles::elsevier_article
      keep_tex: true
  ---
  
  ```{r setup, include=FALSE}
  knitr::opts_chunk$set(echo = TRUE)
  ```
  
  # What I receive
  
  Cite only one article: @Sh:2
  
  It was mentioned in: @Sh:1, @Sh:2, @Sh:3
  
  It was mentioned in [ @Sh:1, @Sh:2, @Sh:3 ]
  
  # Expected result
  
  I wish to have something like:
  
  It was mentioned in (Shelah, 1969b; Shelah, 1969a; Shelah, 1970)
  
  # References
  </code></pre>