Get all Zotpress Item IDs from Collection

Hey!

I am trying to do a loop and grab all of the Item ID from a collection in Zotpress. I reference the Collection ID using the Zotpress shortcode, but I”m not sure how to (if I am even able to) get the Item IDs of the publications within that collection.

//stores Collection ID in the variable $zotcol
<?php $zotcol=get_post_meta($post->ID, 'wpcf-collection-id', true); ?>

I now have the Collection ID stored in the variable $zotcol.
However, I need to get the Item IDs from each publication in that collection because I need to use each Item ID in a URL.

Does anybody know how this can be done?

Thanks for any and all help!