## Periodic Ornamental Designs

**APLANAR, Two-dimensional geometry in APL**, *APL
Quote Quad, 10*, (1980), pp. 11-17.
**TESSL, A tesselation workspace**, *APL Quote
Quad,
10*, (1980), pp. 17-20.
**Periodic Ornamental Designs** (with Doris Schattschneider)
videotape (privately distributed).
**Periodic Ornamental Designs** (with Doris Schattschneider)
a graphic collection, Allentown (Pa.) Museum of Art, 1980.
**Linear Algebra and Affine Planar Transformations**,
College Mathematics Journal, 24 (1993) pp 47-51