Ricketts R.D, Johnson T.C, Brown E.T, Rasmussen K.A, Romanovsky V.V.  2001.  The Holocene paleolimnology of Lake Issyk-Kul, Kyrgystan: trace element and stable isotope composition of ostracods. Paleogeography, Palaeoclimatology, Palaeocecology. 176(1-4):207-227.

Johnson T.J, Rasmussen K.A, Romanovsky V.V.  1999.  Research of natural processes taking place in Issyk-Kul Lake and Issyk-Kul Hollow by means of isotopic methods. Science and New Technologies. (Special Issue No. 1):86-91.