Koutles, T., Kassoli-Fournaraki, A., Filippidis, A. y Tsirambides, A. 1995. Geology and geochemistry of the Eocene zeolite bearing volcaniclastic sediments of Metaxades, Thrace, Greece. Estudios Geológicos. 51, 1-2 (abr. 1995), 19–27. DOI:https://doi.org/10.3989/egeol.95511-2280.