Analysis of information sources in references of the Wikipedia article "Азолова подія" in Ukrainian language version.
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(довідка)The Sr-Nd isotopic record is [...] indicative of a poorly mixed ocean and highly stratified water column with anoxic bottom waters. A stable, "fresh" water upper layer was likely a pervasive feature of the Eocene Arctic Ocean[недоступне посилання з 01.10.2016] (full text of a similar article at doi:10.1029/2008PA001685)
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(довідка)The Sr-Nd isotopic record is [...] indicative of a poorly mixed ocean and highly stratified water column with anoxic bottom waters. A stable, "fresh" water upper layer was likely a pervasive feature of the Eocene Arctic Ocean[недоступне посилання з 01.10.2016] (full text of a similar article at doi:10.1029/2008PA001685)