[3] Bossavit A 1998 Computational
electromagnetism: Variational Formulations, Complementarity, Edge
Elements (San Diego: Academic)

[4] Bossavit A and Kettunen L 1999 Int. J. Numer. Model.
12 129

[5] Bossavit A and Kettunen L 2000 IEEE Trans. Magn. 36 861

[6] Clemens M and Weiland T 2002 IEEE Trans. Magn. 38 389

[7] Gross P W and Kotiuga P R 2004
Electromagnetic Theory and Computation: a Topological Approach,
Mathematical Sciences Research Institute Publications (Cambridge:
Cambridge University) vol 48

[8] Wise D K 2006 Classical Quantum Gravity
23 5129

[9] Stern A 2007 arXiv:0707.4470v2

[10] Xie Z, Ye Z and Ma Y J 2009 Commun. Theor. Phys. (accepted)

[11] Arnold D N, Falk R S and Winther R 2006 Acta Numer. 15 1

[12] Auchmann B and Kurz S 2006 IEEE Trans. Magn. 42 643

[13] Bondeson A, Rylander T and Ingelstrom P 2005 Computational
Electromagnetics, Texts in Applied Mathematics (New York: Springer)
vol 51

[14] Novikov S P 2004 arXiv: math-ph/0303035.

[15] Luo F 2008 http://arxiv.org/abs/0803.4232v1

[16] Dimakis A and Muller-Hoissen F 1999 J.
Math. Phys. 40 1518

[17] Desbrun M, Hirani A N, Leok M and Marsden J E 2005 arXiv:
math.DG/0508341

[18] Beauce V and Sen S 2004 arxiv:abs/hep-th/0403206

[19] Xie Z and Li H B 2008 J. Phys. A 41 085208

[20] Whitney H 1957 Geometric Integration Theory
(Princeton: Princeton University)

[21] Leok M 2004
URL http://resolver.caltech.edu/CaltechETD: etd-03022004-000251