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Candidate dissertation
Ushakov Leonid Vasilievich. Geometrical design the form of reflector, able to concentrate the reflected rays in the set volume of space : к.т.н. : spec.. 05.01.01 - Прикладна геометрія, інженерна графіка : presented. 2007-12-19; . The Kharkov state polytechnical university. – , 0407U005125.
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Updated: 2025-05-11