HREM identification of "one-dimensionally-disordered" polytypes in the SiC (CVI) matrix of SiC/SiC composites Sylvie Schamm, Annie Mazel, Dominique Dorignac and Jean Sévely Microsc. Microanal. Microstruct., 2 1 (1991) 59-73 DOI: 10.1051/mmm:019910020105900