UPPER CRETACEOUS RHYOLITIC ASH BEDS FROM THE NOVAYA SIBIR ISLAND (NEW SIBERIAN ISLANDS) СтатьяKostyleva V., Shchepetova E., Kotelnikov A.GFF. Том 141. 2019. С. 233-240
INTERNATIONAL JOURNAL OF ENGINEERING AND ADVANCED TECHNOLOGY ЖурналBlue Eyes Intelligence Engineering and Sciences Publication.