Trying to separate the two 1E3 papers mentioned by Pettigiani

Here is a link to a viewing file I am using to figure out if there are two 1E3 papers, as Pettigiani lists, or only one.

https://drive.google.com/file/d/168s9X55ZSnPqYuyoibCdcwNAbR7VxFod/view?usp=drive_link