Brumm, H., Wedig, U., & Jansen, M. (2002). Synthesis, Characterisation and Bonding Properties of Polymeric Fullerides AC70·nNH3 (A = Ca, Sr, Ba, Eu, Yb). In Proceedings of the XVIth International Winterschool on Electronic Properties of Novel Materials (pp. 47-50). New York, USA: American Institute of Physics.