1. Kong, J. A., Theory of Electromagnetic Waves, Wiley, 1975.
2. Lindell, I. V., Methods for Electromagnetic Field Analysis, Oxford University Press, 1992.
3. Deschamps, G. A., "Electromagnetics and differential forms," Proc. IEEE, Vol. 69, No. 6, 676-696, 1981.
doi:10.1109/PROC.1981.12048
4. Lindell, I. V., Differential Forms in Electromagnetics, Wiley, 2004.
doi:10.1002/0471723096
5. Hehl, F. W. and Y. Obukhov, Foundations of Classical Electrodynamics, Birkhäuser, 2004.
6. Lindell, I. V. and A. Sihvola, "Perfect electromagnetic conductor," Journal of Electromagnetic Waves and Applications, Vol. 19, No. 7, 861-869, 2005.
doi:10.1163/156939305775468741
7. Hehl, F. W., Y. N. Obukhov, and G. F. Rubilar, "On a possible new type of a T odd skewon field linked to electromagnetism," General Relativity and Quantum Cosmology, 2002.
8. Obukhov, Y. N. and F. W. Hehl, "On possible skewon effects on light propagation," Phys. Rev. D, Vol. 70, 125015, 2004.
doi:10.1103/PhysRevD.70.125015
9. Hehl, F. W., Y. N. Obukhov, G. F. Rubilar, and M. Blagojevic, "On the theory of the skewon from electrodynamics to gravity," Phys. Lett. A, Vol. 347, 14-24, 2005.
doi:10.1016/j.physleta.2005.06.033
10. Nieves, J. F. and P. B. Pal, "The third electromagnetic constant of an isotropic medium," Am. J. Phys., Vol. 62, 207-216, 1994.
doi:10.1119/1.17598
11. Lindell, I. V., "The class of bi-anisotropic IB media," Progress In Electromagnetics Research, Vol. 57, 1-18, 2006.
doi:10.2528/PIER05061302
12. Lindell, I. V., A. Sihvola, S. A. Tretyakov, and A. Viitanen, Electromagnetic Waves in Chiral and Bi-Isotropic Media, Artech House, 1994.
13. Paiva, C. R. and S. A. Matos, "Is the perfect electromagnetic conductor the most general truly isotropic medium?," Proc. Metamaterials Congress, 176-178, Barcelona, 2011.
14. Lindell, I. V. and A. Sihvola, "Transformation method for problems involving perfect electromagnetic (PEMC) structures," IEEE Trans. Antennas Propag., Vol. 53, No. 9, 3005-3011, Sep. 2005.
doi:10.1109/TAP.2005.854519
15. Sihvola, A. and I.V. Lindell, "Perfect electromagnetic conductor medium," Ann. Phys. (Berlin), Vol. 17, No. 9--10, 787-802, 2008.
doi:10.1002/andp.200710297
16. Rumsey, V. R., "Some new forms of Huygens' principle," IRE Trans. Antennas Propagat., Vol. 7, S103-S116, Special Supplement, 1959.
17. Yee, K. S., "Uniqueness theorems for an exterior electromagnetic field," SIAM J. Appl. Math., Vol. 18, No. 1, 77-83, 1970.
doi:10.1137/0118010
18. Kress, R., "On an exterior boundary-value problem for the time-harmonic Maxwell equations with boundary conditions for the normal components of the electric and magnetic field," Math. Meth. in the Appl. Sci., Vol. 8, 77-92, 1986.
doi:10.1002/mma.1670080106
19. Lindell, I. V. and A. Sihvola, "Electromagnetic boundary condition and its realization with anisotropic metamaterial," Phys. Rev. E, Vol. 79, No. 2, 026604-7, 2009.
doi:10.1103/PhysRevE.79.026604
20. Zhang, B., H. Chen, B.-I. Wu, and J. A. Kong, "Extraordinary surface voltage effect in the invisibility cloak with an active device inside," Phys. Rev. Lett., Vol. 100, 063904-4, Feb. 15, 2008.
21. Yaghjian, A. D. and S. Maci, "Alternative derivation of electromagnetic cloaks and concentrators," New J. Phys., Vol. 10, 115022-29, 2008. Corrigendum, ibid, Vol. 11, 039802, 2009.
doi:10.1088/1367-2630/10/11/115022
22. Weder, R., "The boundary conditions for point transformed electromagnetic invisible cloaks," J. Phys. A, Vol. 41, 415401-17, 2008.
doi:10.1088/1751-8113/41/41/415401
23. Lindell, I. V., A. Sihvola, P. Ylä-Oijala, and H. Wallén, "Zero backscattering from self-dual objects of finite size," IEEE Trans. Antennas Propag., Vol. 57, No. 9, 2725-2731, Sep. 2009.
doi:10.1109/TAP.2009.2027180
24. Lindell, I. V. and A. H. Sihvola, "Uniaxial IB-medium interface and novel boundary conditions," IEEE Trans. Antennas Propagat., Vol. 57, No. 3, 694-700, Mar. 2009.
doi:10.1109/TAP.2009.2013431
25. Van Bladel, J., Electromagnetic Fields, 2nd Ed., 1025-1030, IEEE Press, 2007.
doi:10.1002/9780470124581.app3
26. Lindell, I. V. and A. Sihvola, "Electromagnetic boundary conditions defined in terms of normal field components," Trans. IEEE Antennas Propag., Vol. 58, No. 4, 1128-1135, Apr. 2010.
doi:10.1109/TAP.2010.2041149
27. Tretyakov, S., I. Nefedov, A. Sihvola, S. Maslovski, and C. Simovski, "Waves and energy in chiral nihility," Journal of Electromagnetic Waves and Applications, Vol. 17, No. 5, 695-706, 2003.
doi:10.1163/156939303322226356