Geodesic
Nikolai Nikolaevich Konstantinov passed away
Matematičeskoe obrazovanie, Tome 99 (2021) no. 3.

Voir la notice de l'article provenant de la source Math-Net.Ru

Nikolai Nikolayevich Konstantinov (born January 2, 1932), a permanent member of the editorial board of our journal, died on July 3 of this year after a serious long illness. 
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     title = {Nikolai {Nikolaevich} {Konstantinov} passed away},
     journal = {Matemati\v{c}eskoe obrazovanie},
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     publisher = {mathdoc},
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     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MO_2021_99_3_a0/}
}
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Nikolai Nikolaevich Konstantinov passed away. Matematičeskoe obrazovanie, Tome 99 (2021) no. 3. http://geodesic.mathdoc.fr/item/MO_2021_99_3_a0/