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Locher, R., Wagner, J., Fuchs, F., Wild, C., Hiesinger, P., Gonon, P., & Koidl, P. (1995). Boron doped diamond films: Electrical and optical characterization and the effect of compensating nitrogen. Materials Science and Engineering: B, 29(1-3), 211–215. doi:10.1016/0921-5107(94)04045-6 
10.1016/0921-5107(94)04045-6