Comparison of Supercontinent Cycles in the Metallogeny of Niobium
A. V. Tkachev, D. V. Rundqvist, N. A. Vishnevskaya,
Geology of Ore Deposits, 62(1), 49, 2020,
DOI: 10.1134/S1075701520010067

Global Metallogeny of Tantalum Through Geological Time
A. V. Tkachev, D. V. Rundqvist, N. A. Vishnevskaya,
Geology of Ore Deposits, 61(6), 512, 2019,
DOI: 10.1134/S1075701519060060

Main Features of the Historical Metallogeny of Niobium
A. V. Tkachev, D. V. Rundqvist, N. A. Vishnevskaya,
Doklady Earth Sciences, 487(1), 751, 2019,
DOI: 10.1134/S1028334X19070092