If you are researching the format itself, there is a technical 7z format specification that functions as a "paper" describing its architecture.
Right-click xsauyuy.7z and select 7-Zip > Open archive to see the list of files without extracting them first. xsauyuy.7z
To read any document or paper stored within this file, you must extract it: Get the official tool from 7-zip.org . If you are researching the format itself, there
The file does not appear to be a widely known or standard file name in public databases or academic documentation. However, based on the .7z extension, it is a compressed archive created with the 7-Zip software . based on the .7z extension
Select the document you need and click Extract to save it to your computer.