Reference
Petr Rajlich, Jean J. Peucat, Jan Kantor, Josef Rychtar (1992): Variscan Shearing in the Moldanubian of the Bohemian Massif: Deformation, Gravity, K-Ar and Rb-Sr Data for the Choustnik Prevariscan Orthogneiss – Jahrbuch der Geologischen Bundesanstalt – 135: 579 - 595.