[C-13 Nuclear Magnetic-resonance Analysis of Artificially Matured Humic Coals - Comparison With a Reference Maturation Series of Coals]
(1988) Comptes rendus de l’Académie des sciences - Séries IIB - - Mécanique, Physique, chimie, astronomie — Vol. 306, n° 15, p. 1093-1097 (1988)
