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https://www.kth.se/math/kalender/andres-franco-grisales-rigidity-and-concircular-symmetries-1.1199964?date=2022-11-08&orgdate=2022-03-07&length=1&orglength=300
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https://andresfranco.net/
Andres Franco: Empresario, Consultor y Productor Audiovisual en Colombia.
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