What is the mean of "to appear" in references I want to find the reference 21 in picture below. Then, it is French, I don't know French. Seemly, the reference 22 is like to 21, so I want to find reference 22, but what is the mean of to appear ? How can I find it ? Or there are English version of 21 ? > ![enter image description here](

The standard meaning of it is: the article has been accepted, but it is not published yet.