I notice you’re asking for a paper about — but this sounds like you may be looking for either:
is a specialized, lightweight Windows application designed for visualizing and fitting X-ray Photoelectron Spectroscopy (XPS) data. Originally developed by Raymund Kwok, it remains a popular freeware choice for researchers and students due to its straightforward interface and essential fitting capabilities. Core Features for Peak Analysis xps peak fit 41 new download
Key highlights: