References
- Novikov , N. V. 1988 . Doklady AN SSSR , 30 ( 6 ) : 1122 – 1125 .
- Shul'zhenko , A. A. 1985 . “ High Pressure Effect on Structure and Properties of Superhard Materials ” . 8 – 12 . Kiev : Naukova Dumka .
- Novikov , N. V. and Shul'zhenko , A. A. 1986 . “ Drill Bits Made from Superhard Materials ” . 3 – 8 . Kiev : Naukova Dumka .