Belkin, V.
(2020).
 Oil prices and solar activity: evidence of strong ties.
<em>Челябинский гуманитарий, </em>(1 (50)), 7-19.
Получено с <a href="https://journals.csu.ru/index.php/chelgum/article/view/384" target="_new">https://journals.csu.ru/index.php/chelgum/article/view/384</a>