Change the size of the publication icons proportionally to the number of papers for each source

While exploring the publications in a region I realised that it would be fantastic if the syze of the symbols with the publications feature could scale with the number of papers each source has about. There are many sources with just one publication and it is usually very useful to identify visually quickly which are the most discussed sources in a given field, since that typically would determine what do we know about the region as a whole.