I. Zagorchev, C. Balica, E. Kozhoukharova, I. Coriolan Balintoni, G. Săbău, and E. Negulescu, “Cadomian and post-cadomian tectonics west of the Rhodope Massif – The Frolosh greenstone belt and the Ograzhdenian metamorphic supercomplex”, GeolMac, vol. 29, no. 2, pp. pp. 101-132, Dec. 2015.