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Boron

T Ogitsu, E Schwegler, G Galli, Beta-Rhombohedral Boron: At the Crossroads of the Chemistry of Boron and the Physics of Frustration, CR 113, 3425 (2013)

T Ogitsu, F Gygi, J Reed, M Udagawa, Y Motome, E Schwegler, G Galli, Geometrical frustration in an elemental solid: An Ising model to explain the defect structure of β-rhombohedral boron, PRB 81, 020102 (2010)

A R Oganov, J Chen, C Gatti, Y Ma, Y Ma, C W Glass, Z Liu, T Yu, O O Kurakevych, V L Solozhenko, Ionic high-pressure form of elemental boron, Nat Let 457, 863 (2009)

B Callmer, An accurate refinement of the beta-rhombohedral boron structure, Acta Cryst B 33, 1951 (1977) – cif