Institute of Applied Mathematical Research [Petrozavodsk] Laboratoire120307

Karelian Research Centre, RAS - Russia, 185910, Petrozavodsk, Pushkinskaya st., 11Russiehttp://www.mathnet.ru/php/organisation.phtml?&orgid=2761&option_lang=eng

 Russian Academy of Sciences [Moscow] Regroupement d'Institutions217892

RASLeninsky Ave, 14, Moscow, Russie, 119991ROR : https://ror.org/05qrfxd25Russiehttp://www.ras.ru/

 Petrozavodsk State University [Petrozavodsk] Institution367097

33, Lenin Str., 185910, Petrozavodsk, Republic of KareliaROR : https://ror.org/0176aa147Russiehttp://old.petrsu.ru/news_e.html