Jelínek, T., Stíbr, B., Kennedy, J. D., Hnyk, D., Bühl, M., & Hofmann, M. (2003). Azacarbaborane chemistry. Butyl nitrite synthesis of the new eight-, nine- and ten-vertex azacarbaboranes exo- and endo-7-CH3-hypho-7,8-NCB6H11, nido-6,8,9-NC2B7H10, arachno-6,5,9-NC2B7H12, and arachno-6,5,10-C2NB7H12. Dalton Transactions, (7), 1326-1331. doi:10.1039/b300088e.