For citations:

Iskül G.S. Key section stratigraphy of the Middle Ordovician Kunda and Aseri stages of the Lava River (south of the Lake Ladoga region). Regional Geology and Metallogeny. 2025;32(1 (101)):108-133. (In Russ.) https://doi.org/10.52349/0869-7892_2025_101_108-133