1. 1. Alenitsin, V. D. 1885. Land on the shores of the Aral Sea; its features, flora and fauna... The Aral Sea. Essay II. Picturesque Russia... Semenov, P.P. (ed.). X. Russian Middle Asia... M. O. Wolf's Society Publishing House, Saint Petersburg and Moskva, 42-76. (In Old Russian)
2. 2. Berg, L. 1908. The Aral Sea: An Experience of a Physico-Geographic Monograph. News of the Turkmen Branch of the Imperial Russian Geographical Society, V: Scientific Results of the Aral Expedition…, Issue 9.' Printing House of M. M. Stasyulevich, Saint Petersburg, 1-626. (In Old Russian)
3. 3. Borodin, V. S., E. P. Kyrylyuk, V. L. Smilyanska, E. S. Shabliovsky, V. E. Shubravsky. 1984. T. G. Shevchenko. Biography. Naukova Dumka, Kiev. 198-260. Web-version: 'Izbornik'. (In Ukrainian)
4. 4. Butakoff, A. 1853. Survey of the Sea of Aral. The Journal of the Royal Geographical Society of London, 23: 93-101. JSTOR, www.jstor.org/stable/1797951. https://doi.org/10.2307/1797951
5. 5. Database of the Aral Sea. 2019. CAWATERinfo. https://bit.ly/2qbDFWZ