 Other Marxist authors include Henri Lefebvre (1901–1999), who partly influenced the Situationist and Guy Debord, the group "Socialisme ou Barbarie" aforementioned, Althusser's students Etienne Balibar (author of The Philosophy of Marx), Jacques Rancierre, and perhaps most prominently, Alain Badiou.Badiou's most well-known work is undoubtedly Being and Event, but his analysis of the May 68 revolts in The Communist Hypothesis is well known as well.Recently, Slavoj Zizek has gained prominence as a French Marxist of Slovene origin, primarily for his re-reading of Marx using Lacan and Hegel.