THERMAL EXPANSION OF METHANES AND CONVERSION PROCESSES V.G. Manzhelii, A.M. Tolkachev, A.N. Aleksandrovskii, V.B. Kokshenev and V.I. Kuchnev J. Phys. Colloques, 39 C6 (1978) C6-1021-C6-1022 DOI: 10.1051/jphyscol:19786451