Output of the function fp_compute_ratio()

[nmouquet]

It would be great if the results could provide a list of the references in each category, so we can check and find the for-profit only references in our manuscript afterwards.

[ahasverus]

I think instead of implementing this enhancement in the function fp_compute_ratio() I will add this to fp_article_fairness() and return article metadata. This function needs to be adapted to accept several DOI.