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A qualitative classification of extraterrestrial civilizations

Valentin D. Ivanov, Juan Carlos Beamín, Claudio Cáceres and Dante Minniti

A&A, 639 (2020) A94

Published online: 14 July 2020

DOI: 10.1051/0004-6361/202037597

Valentin D. Ivanov

Juan Carlos Beamín

Claudio Cáceres

Dante Minniti

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