PROVALOVA, Elena V. et al.
 Prospects for the Development of Ecological Tourism in Specially Protected Natural Areas of the Ulyanovsk Region.
<strong>Journal of Environmental Management and Tourism</strong>, [S.l.], v. 10, n. 4, p. 809-818, oct. 2019.
ISSN 2068-7729.
Available at: &lt;<a href="https://journals.aserspublishing.eu/jemt/article/view/3888" target="_new">https://journals.aserspublishing.eu/jemt/article/view/3888</a>&gt;. Date accessed: 05 may 2024.
doi: <a href="https://doi.org/10.14505//jemt.v10.4(36).11">https://doi.org/10.14505//jemt.v10.4(36).11</a>.