Sorry, but then I don't understand why this other group doesn't work: 

<script src="https://bibbase.org/show?bib=https://bibbase.org/zotero-group/Andrea%20Bertino/2358893&jsonp=1"></script>

It works! thank you very much!

Hi Christian, 

I have the same problem when I try to embed this: 

<script src="https://bibbase.org/zotero-group/andrea_bertino/2358901"></script>

What I am doing wrong?

Thank you for you help,

Andrea