new combination referenceNikolaev, A.; Zhuravlev, A. (2016). Timan-Pechora province: boundary of the Lower and Middle section of Carboniferous system. <em>Neftegazovaya Geologiya. Teoriya I Praktika.</em> 11(2): 1-8., available online athttps://www.researchgate.net/publication/301828016[details] Available for editors [request]