COINCIDENCE IN HEXAGONAL MATERIALS J.G. ANTONOPOULOS, P. DELAVIGNETTE, Th. KARAKOSTAS, Ph. KOMNINOU, E. LAURENT-PINSON, S. LAY, G. NOUET and J. VICENS J. Phys. Colloques, 51 C1 (1990) C1-61-C1-66 DOI: 10.1051/jphyscol:1990106
