For citations:

Frolova N.L., Efimova L.E., Povalishina E.S., Terskaya E.V., Shirokova V.A. Specific Features of Nature Use and Hydroecological Condition of Lake-River System of Borov Razliv (“Valday” National Park). Izvestiya Rossiiskoi Akademii Nauk. Seriya Geograficheskaya. 2012;(1):81-90. (In Russ.) https://doi.org/10.15356/0373-2444-2012-1-81-90