Anan, Y.; Kunito, T.; Ikemoto, T.; Kubota, R.; Watanabe, I.; Tanabe, S.; Miyazaki, N.; Petrov, E.A. (2002). "Elevated concentrations of trace elements in Caspian Seals (Phoca caspica) found stranded during the mass mortality events in 2000". Archives of Environmental Contamination and Toxicology. 42 (3): 354–362. Bibcode:2002ArECT..42..354A. doi:10.1007/s00244-001-0004-7. PMID11910465. S2CID24430326.
Harkonen, Tero; Jüssi, Mart; Baimukanov, Mirgaly; Bignert, Anders; Dmitrieva, Lilia; Kasimbekov, Yesbol; Verevkin, Mikhail; Wilson, Susan; Goodman, Simon J. (Jul 2008). "Pup Production and Breeding Distribution of the Caspian Seal (Phoca caspica) in Relation to Human Impacts". Ambio: A Journal of the Human Environment. 37 (5): 356–361. Bibcode:2008Ambio..37..356H. doi:10.1579/07-r-345.1. PMID18828281. S2CID21482406.
Anan, Y.; Kunito, T.; Ikemoto, T.; Kubota, R.; Watanabe, I.; Tanabe, S.; Miyazaki, N.; Petrov, E.A. (2002). "Elevated concentrations of trace elements in Caspian Seals (Phoca caspica) found stranded during the mass mortality events in 2000". Archives of Environmental Contamination and Toxicology. 42 (3): 354–362. Bibcode:2002ArECT..42..354A. doi:10.1007/s00244-001-0004-7. PMID11910465. S2CID24430326.
Harkonen, Tero; Jüssi, Mart; Baimukanov, Mirgaly; Bignert, Anders; Dmitrieva, Lilia; Kasimbekov, Yesbol; Verevkin, Mikhail; Wilson, Susan; Goodman, Simon J. (Jul 2008). "Pup Production and Breeding Distribution of the Caspian Seal (Phoca caspica) in Relation to Human Impacts". Ambio: A Journal of the Human Environment. 37 (5): 356–361. Bibcode:2008Ambio..37..356H. doi:10.1579/07-r-345.1. PMID18828281. S2CID21482406.
Anan, Y.; Kunito, T.; Ikemoto, T.; Kubota, R.; Watanabe, I.; Tanabe, S.; Miyazaki, N.; Petrov, E.A. (2002). "Elevated concentrations of trace elements in Caspian Seals (Phoca caspica) found stranded during the mass mortality events in 2000". Archives of Environmental Contamination and Toxicology. 42 (3): 354–362. Bibcode:2002ArECT..42..354A. doi:10.1007/s00244-001-0004-7. PMID11910465. S2CID24430326.
Harkonen, Tero; Jüssi, Mart; Baimukanov, Mirgaly; Bignert, Anders; Dmitrieva, Lilia; Kasimbekov, Yesbol; Verevkin, Mikhail; Wilson, Susan; Goodman, Simon J. (Jul 2008). "Pup Production and Breeding Distribution of the Caspian Seal (Phoca caspica) in Relation to Human Impacts". Ambio: A Journal of the Human Environment. 37 (5): 356–361. Bibcode:2008Ambio..37..356H. doi:10.1579/07-r-345.1. PMID18828281. S2CID21482406.
Anan, Y.; Kunito, T.; Ikemoto, T.; Kubota, R.; Watanabe, I.; Tanabe, S.; Miyazaki, N.; Petrov, E.A. (2002). "Elevated concentrations of trace elements in Caspian Seals (Phoca caspica) found stranded during the mass mortality events in 2000". Archives of Environmental Contamination and Toxicology. 42 (3): 354–362. Bibcode:2002ArECT..42..354A. doi:10.1007/s00244-001-0004-7. PMID11910465. S2CID24430326.
Harkonen, Tero; Jüssi, Mart; Baimukanov, Mirgaly; Bignert, Anders; Dmitrieva, Lilia; Kasimbekov, Yesbol; Verevkin, Mikhail; Wilson, Susan; Goodman, Simon J. (Jul 2008). "Pup Production and Breeding Distribution of the Caspian Seal (Phoca caspica) in Relation to Human Impacts". Ambio: A Journal of the Human Environment. 37 (5): 356–361. Bibcode:2008Ambio..37..356H. doi:10.1579/07-r-345.1. PMID18828281. S2CID21482406.