- 201604670. PMID 27273799. Schroeder, Melanie,
Eigenschaften von
borreichen Boriden und Scandium-Aluminium-Oxid-Carbiden (in German), p. 139,
archived from...
- been
observed in Al3BC, see
Schroeder M. "Eigenschaften von
borreichen Boriden und Scandium-Aluminium-Oxid-Carbiden" (in German). p. 139. B(−1) has been...