Gorokhov et al. 2001

Gorokhov I.M., Siedlecka A., Roberts D., Melnikov N.N., Turchenko T.L. Rb-Sr dating of diagenetic illite in Neoproterozoic shales, Varanger Peninsula, North Norway // Geol. Mag. 2001. V. 138. № 5. P. 541-562.