Onac, B. P., Sumrall, J., Tămaş, T., Povară, I., Kearns, J., Dârmiceanu, V., Veres, D. and Lascu, C. (2009) “The Relationship Between Cave Minerals and H2S - Rich Thermal Waters along Cerna Valley (SW Romania)”, Acta Carsologica. Ljubljana, Slovenija, 38(1). doi: 10.3986/ac.v38i1.135.