Stylistic comparison here is the secondary thing.
A proven provenance (collection, exhibitions, etc.) are experts in timing graph and TG under such work will not subscribe - it's my personal experience.
This seems rock solid provenance. If there is a sale graphics Dobuzhinsky from this collection auctions and collectors, there must be feedback, at least - sales history.
The author of the post I understand he wants us to get an answer on the technical execution of the work. I would say not excluded.
Study your subject with provenance - is the key to success with this schedule.
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