Preface from Kantor & Solodovnikov General hypercomplex numbers 1st-order hypercomplex numbers: Complex, Double, Dual

the History of Hypercomplex Numbers

Bibliography

• Hypercomplex Numbers: An Elementary Introduction to Algebras by Kantor & Solodovnikov
• Fundamentals of Abstract Analysis by Andrew Gleason
• A History of Mathematics by Carl Boyer
• Complex Numbers & Geometry by Liang-shin Hahn