I'm wondering if anyone knows of any academic papers about 2D skeletal animation.

Baiscally i'm thinking about how you could fake 3D in the context of a 2D model but without necessarily hand drawing transformations of the sprites/vector art associated with each "bone" in the skeleton. I'm also interested in basically "cartoon optics" meaning I do not literally want to be able to fake projective geometry with 2D sprites because doing so defeats the purpose of not just using a 3D polygon-based model. I'm interested in heavily stylized art common in Midcentury animatiom, “UPA style animation”, and how it could be modeled in code .

Anyway my question is kind of hard to express because I don't really know what I'm looking for. I want to read work that has been done on automatic generation of heavily stylized animation without just altering how conventional polygon-based 3D models are rendered.