%0 Journal Article
%T How to build a technical drawing surface with own and falling of shadows
%A Nikiforov, V.M.
%A Mal'ceva, E.A.
%K a technical drawing, surface area, axonometric projection, secondary projection, the ellipse
%J Journal of Technical Research
%D 2020
%N 6
%P 4
%I INFRA-M Academic Publishing LLC.