How to find out the corresponding author of a paper? I am interested to know how to find out the corresponding author of the following paper (which is just an example for the discussion here):
https://epubs.siam.org/doi/abs/10.1137/19M1242859
It may require an access to read the full paper. Due to the copyright I prefer not to say take screen shot of the paper, but inside I find nothing indicating who the corresponding author is.
Let me elaborate more about my concern. Suppose I am the corresponding author of the paper above, and I intend to use it in a funding application. The funding provider may then check whether I am really the corresponding author. Would they contact the publisher to verify it? If so, would the publisher disclose the details? If it happens so, why don't the publisher simply list out who the corresponding author? Or the publisher would tell that in this journal we don't take the significance of the corresponding author?
I tried to take a look at the metadata.
My first attempt was at CrossRef (http://api.crossref.org/works/10.1137/19M1242859). There, in the author field, it seems that I. K. is the &quot;first&quot; author, while the two others are &quot;additional&quot; authors. However, &quot;first&quot; does not have to mean &quot;corresponding&quot;, of course.

My second attempt was to download the metadata at Web of Science (full record, tab-limited file). There I found under the column RP (i.e. &quot;Reprint Address&quot;) the information:

Kogan, IA (corresponding author), North Carolina State Univ, Dept Math, Raleigh, NC 27695 USA.