Potapov, M., Gulgenova, A. and Babykina, M. (2016) “Isotomidae (Collembola) of Buryat Republic. III. The genera Vertagopus and Agrenia, with a note on ’Claw index’”, Zootaxa. Auckland, New Zealand, 4088(1), pp. 112–128. doi: 10.11646/zootaxa.4088.1.5.