Yu. A. Ossipyan, N. S. Sidorov, A. V. Palnichenko, O. M. Vyaselev, M. V. Kartsovnik, M. Opel, V. V. Avdonin, D. V. Shakhrai, N. V. Biktimirova, A. A. Golyshev: Superconductivity of C(60) fullerite intercalated with Ca by means of shock-wave pressure technique. 2008Chemical Physics Letters: 457. ISBN 0009-2614 http://dx.doi.org/10.1016/j.cplett.2008.03.059