Marquardt [Hartmann], K., Wirth, R., Markl, G. (2008): P-T-X-controlled element transport through granulite-facies ternary feldspar from Lofoten, Norway. - Contributions to Mineralogy and Petrology, 156, 3, 359-375.https://doi.org/10.1007/s00410-008-0290-4