Peytcheva et al. 2004

Peytcheva I., vonQuadt A., Ovtcharova M., Handler R., Neubauer F., Salnikova E., Kostitsyn Y., Sarov S., Kolcheva K. Metagranitoids from the eastern part of the Central Rhodopean Dome (Bulgaria): U-Pb, Rb-Sr and 40Ar/39Ar timing of emplacement and exhumation and isotope-geochemical features // Miner. Petrol. 2004. V. 82. P. 1-31.