Guys,
Sometimes I see comments which are added in the end of a paper(e.g. I've seen comments and their replies from the author in the end of the paper in Elsevier's journals). The question is that how can we make such a comments to get answer from the author(s) formally?
I have several questions on a paper that should ask them to the authors. I've tried to have a conversation with the authors via E-Mail but nobody answered me then decided to ask my questions formally from the journal. May I use LTE (Letter to the editor) to do this? have you ever done such a thing so far?
https://en.wikipedia.org/wiki/Letter_to_the_editor