Ачасов, А. Б., А. О. Седов, and А. О. Ачасова. “Assessment of a Contamination of Crops of Sunflower by Means of Unmanned Aerial Vehicles”. Man and Environment. Issues of Neoecology, no. 3-4(26), 1, pp. 69-74, doi:10.26565/1992-4224-2016-26-08.