: The .var suffix in this context usually denotes a variant or a specific material/texture setting.

While there is no formal academic "paper" on this specific file, it is part of the technical infrastructure for a popular community-created character model.

: These files are primarily utilized in the Unity engine (for VRChat) or SFM to toggle between different clothing options or textures for the Logan base model. Related Technical Research

: Researchers use the Logan dataset to discover novel viruses, such as Papillomaviruses and HHV-6 , by searching through millions of sequencing datasets. R/qtl2 input file format - Karl Broman

If you are looking for academic research involving the name "Logan" in a scientific context, it most likely refers to the , which is discussed in the following paper: