S. Motojima et al. "Low-temperature deposition of TaB and TaB2 by chemical vapor deposition" J. Nucl. Mater. 105 (1982) 262
S. Otani et al. "Floating zone growth and high-temperature hardness of NbB2 and TaB2 single crystals" J. Cryst. Growth 194 (1998) 430
S. Okada et al. "Single crystals of TaB, Ta5B6, Ta3B4 and TAB2, as obtained from high-temperature metal solutions, and their properties" J. Cryst. Growth 128 (1993) 1120