Quasi-periodic solutions of nonlinear wave equations on the \(d\)-dimensional torus. (English) Zbl 1454.37003
EMS Monographs in Mathematics. Zürich: European Mathematical Society (EMS) (ISBN 978-3-03719-211-5/hbk; 978-3-03719-711-0/ebook). xv, 358 p. (2020).