ISBN-13: 9780821844694 / Angielski / Miękka / 2008 / 261 str.
The author considers the fundamental lemma for twisted endoscopy, for the units of Hecke algebras only. He proves that it is true if two other lemmas are true - the fundamental lemma for Lie algebras (and non-twisted endoscopy) and another lemma called 'non-standard fundamental lemma'.