E. V. Bliznyak. Description of works on the fairway conditions on the Yenisei, from the village of Vorogova to the Osinovsky threshold (inclusive) and on the Ponomarev stones in 1912: In Russian (ask us if in doubt)./Bliznyak E. V. Opisanie rabot po obstanovke farvatera na Enisee, ot s. Vorogova do Osinovskogo poroga (vklyuchitel'no) i na Ponomarevskikh kamnyakh v 1912 g.: Report of Ing. E. V. Bliznyak. Upgrade of waterways and highways (along the waterways),(Materials for description of Russian rivers and history of improvement of their navigational conditions; Issue 46) St. Petersburg, 1913, 64 p. SKUalb96faff90d984a669.