Flot, D., Friese, K., Haufe, O., Modrow, H., Panthöfer, M., Reich, A., et al. (2003). Structure Analysis of Alkaline Earth Endohedral Fullerenes M@C74·Co(OEP)·2C6H6 (M = Sr, Ba). In Proceedings of the XVIIth International Winterschool/Euroconference on Structural and Electronic Properties of Novel Materials (pp. 37-40). New York, USA: American Institute of Physics.