**Articles**

Through his many years of research, Stubblefield has had several publication
on the

dubjects of geometry, trigonometry, and computer

programming. Here is a list of Stubblefields

published works.

- Informal Geometry
- An Intuitive Approach to Elementary Geometry
- Structurs of Number Systems
- Some imbedding and non-imbedding theorems for N-manifold
- The number of topologies on a set of eight elements
- Lower bounds for odd perfect numbers (beyond the googol)