The DSA is a voluntary, nonprofit education
corporation, organized for the conduct of
research and education of the public in the
use of dozenal (also called duodecimal or
base-twelve) in calculations, mathematics,
weights and measures, and other branches of
pure and applied science.
Trigg’s “Cyclic Duodecimal Integers”; G. Zirkel’s Unambiguous notation; “Axiological Analysis”