ラース・ヘルマンダー
Hörmander, Lars (2009) [1985], The analysis of linear partial differential operators IV: Fourier Integral Operators, Classics in Mathematics, Springer-Verlag, p. 352, ISBN 978-3-642-00117-8, https://books.google.com/books?id=La-Uy_wJL3sC
Hörmander, Lars (2003-12) [1987], Lectures on nonlinear hyperbolic differential equations, Mathématiques et Applications (Book 26), Springer-Verlag, p. 290, ISBN 978-3-540-62921-4, https://books.google.com/books?id=qps02wnhmEMC
Hörmander, Lars (2006-12) [1994], Notions of Convexity, Modern Birkhäuser Classics (Book 127), Birkhäuser, p. 416, ISBN 978-0-8176-4584-7, https://books.google.com/books?id=VwspLw1XKRYC