1. G. P. Yakovlev, A. K. Sytin, and Yu. R. Roskov, Legumes of Northern Eurasia: a Checklist (Royal Botanical Garden, Kew, 1996).
2. A. V. Polozhii, in Flora of Siberia (Novosibirsk, 1994), Vol. 9, pp. 74–151 [in Russian].
3. G. A. Peshkova, in Flora of Central Siberia (Novosibirsk, 1979), Vol. 2, pp. 607–625 [in Russian].
4. N. S. Pavlova, in Vascular Plants of the Soviet Far East (Leningrad, 1989), Vol. 4, pp. 236–280 [in Russian].
5. B. A. Yurtsev, in Arctic Flora of the USSR (Leningrad, 1986), Vol. 2, pp. 61–146 and 178–182 [in Russian].