1. Hestenes, D., Sobczik, G.: Clifford Algebra to Geometric Calculus. Reidel, Dordrecht (1984)
2. Kadeisvili, J.V.: An introduction to the Lie–Santilli isotopic theory. Math. Methods Appl. Sci. 19, 1349–1395 (1996)
3. Santilli, R.M.: Isonumber and genonumbers of dimension 1, 2, 4, 8, their isoduals and pseudoduals, and hidden numbers of dimension 3, 5, 6, 7. Algebras Groups Geom. 10, 273–321 (1993)
4. Santilli, R.M.: Nonlocal integral isotopies of differential calculus, geometries and mechanics. Rend. Circ. Mat. Palermo Suppl. 42, 7–82 (1996)
5. Santilli, R.M.: Elements of Hadronic Mechanics, Vol. I: Mathematical Foundations. Ukrainian Academy of Sciences, Kiev (1993)