1. Cohn R.M.: Order and dimension. Proc. Am. Math. Soc. 87(1), 1–6 (1983)
2. Hrushovski, E.: The elementary theory of the frobenius automorphisms. http://arXiv.org/abs/math/0406514 (2004), (preprint)
3. Jacobi, C.G.J.: De investigando ordine systematis aequationum differentialum vulgarium cujuscunque, [Crelle 64], vol. 4, pp. 297–320, [GW V] pp. 193–216. English translation (this issue of AAECC)
4. Jacobi, C.G.J.: De aequationum differentialum systemate non normali ad formam normalem revocando, [VD] pp. 550–578, [GW V] pp. 485–513. English translation (this issue of AAECC)
5. Jacobi, C.G.J.: Theoria novi multiplicatoris systemati aequationum differentialium vulgarium applicandi, first published in [Crelle 27], vol. 3, pp. 199–268 (part I), [Crelle 29], vol. 3, pp. 213–279, vol. 4, pp. 333–376 (part II), reproduced in [GW IV], pp. 317–509