Lev Semyonovich Rubinstein (Russian: Лев Семёнович Рубинштейн; 19 February 1947 – 14 January 2024) was a Russian essayist, journalist, poet, and social activist. He was a founder and member of Moscow Conceptualism. Biography. Born on 19 February 1947 in Moscow to Jewish parents, Rubinstein studied philology at Moscow Pedagogical Institute for Correspondence Studies (now: Sholokhov Moscow State University for Humanities). After graduating, he worked as a librarian and bibliographer with his alma mater, where he encountered the catalog cards that would inspire his "notecard poems".
https://en.wikipedia.org/wiki/Lev_Rubinstein