1. Bunge M A (1998), Philosophy of Science, Transaction Publishers, New Brunswick, New Jersey.
2. Cartan É (1899), Sur certaines expressions différentielles et le problème de Pfaff, Annales Scientifiques de l’École Normale Supŕieure, Série 3, 16, 239–332
3. Chandrasekhar S (1992), Liquid crystals, 2nd. edition, Cambridge University Press.
4. de Rham G (1955), Variétés différentiables, Hermann. English version: Differentiable manifolds, Springer, 1984.
5. Elżanowski M and Preston S (2007), A model of the self-driven evolution of a defective continuum, Mathematics and Mechanics of Solids
12/4, 450–465.