Collins, A.T. (1993). "The Optical and Electronic Properties of Semiconducting Diamond". Philosophical Transactions of the Royal Society A342 (1664): 233–244. doi:10.1098/rsta.1993.0017. Bibcode: 1993RSPTA.342..233C.
Landstrass, M.I.; Ravi, K.V. (1989). "Resistivity of chemical vapor deposited diamond films". Applied Physics Letters55 (10): 975–977. doi:10.1063/1.101694. Bibcode: 1989ApPhL..55..975L.
Collins, A.T. (1993). "The Optical and Electronic Properties of Semiconducting Diamond". Philosophical Transactions of the Royal Society A342 (1664): 233–244. doi:10.1098/rsta.1993.0017. Bibcode: 1993RSPTA.342..233C.
Landstrass, M.I.; Ravi, K.V. (1989). "Resistivity of chemical vapor deposited diamond films". Applied Physics Letters55 (10): 975–977. doi:10.1063/1.101694. Bibcode: 1989ApPhL..55..975L.