Singer, R. 1950: Naucoria Fries y blizkiye rody v SSSR. Trudy Botanicheskogo Instituta Akademii Nauk SSSR 6: 402-498.
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| Singer, R. 1950: Naucoria Fries y blizkiye rody v SSSR. Trudy Botanicheskogo Instituta Akademii Nauk SSSR 6: 402-498. |