Tables for Rhombohedral-hexagonal Transformations : Giving (c/a)h̳e̳x̳ and Ar̳h̳/ah̳e̳x̳ to 6 Significant Figures in Terms of the Rhombohedral Angle [alpha] for Every Minute of Arc from 00 l0ʹ to 1190 59ʹ / J D H. Donnay and Hiroshi Takeda.

Donnay, J. D. H. 1902-