In dictionaries:
Igor and Grichka Bogdanoff
Igor Youriévitch Bogdanoff (29 August 1949 – 3 January 2022) and Grégoire "Grichka" Youriévitch Bogdanoff (29 August 1949 – 28 December 2021), alternatively spelled Bogdanov, were French twin television presenters,Luis Gonzalez-Mestres, L'Énigme Bogdanov, Éditions Télémaque, Paris, 2015, 320 p., producers, and essayists who presented a variety of programmes in science fiction, popular science, and cosmology.
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