Updated citations for CAPIO

[marcoSanti]

This commit updates the Bibliography for CAPIO, listing the papers related to the CAPIO methodology, highlighting the preferred citation source.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 63.71%. Comparing base (927ee2e) to head (347acc4).
⚠️ Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #220      +/-   ##
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- Coverage   63.79%   63.71%   -0.08%     
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  Files          77       77              
  Lines        3193     3197       +4     
  Branches     1988     1991       +3     
==========================================
  Hits         2037     2037              
- Misses        380      381       +1     
- Partials      776      779       +3     

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