Degens, Egon T. (1981): Rate of denudation in Black Sea source area. In: Likens, Gene E. (chairperson), Mackenzie, Frederick T., Richey, Jeffrey E., Sedell, James R., Turekian, Karl K., Carbon Dioxide Effects Research and Assessment Program; Flux of organic carbon by rivers to the oceans; report of a workshop, CONF-8009140, 34-45, georefid:1982-002945