Kiefer B. Normal and inverse ringwoodite at high pressures / B.Kiefer,L.Stixrude,R.Wentzcovitch, 1999. - 17 p. - Текст : непосредственный.
Karki B.B. High pressure elastic properties of major materials of earth's mantle from first principles / B.B.Karki,L.Stixrude,R.Wentzcovitch, 2001. - 28 p. - Текст : непосредственный.