Pyrolysis of a polyvinylsilazane, polymeric precursor for silicon carbonitride : structural investigation by 1H, 13C, 29Si, 15N and 14N nuclear magnetic resonanceC Gerardin, F Taulelle and J LivageJ. Chim. Phys., 89 (1992) 461-467DOI: https://doi.org/10.1051/jcp/1992890461