ラース・ヘルマンダー
440, ISBN 978-3-540-00662-6, https://books.google.com/books?id=aaLrCAAAQBAJ
Hörmander, Lars (2004) [1983], The analysis of linear partial differential operators II: Differential Operators with Constant Coefficients, Classics in Mathematics, Springer-Verlag, p. 395, ISBN 978-3-540-22516-4, https://books.google.com/books?id=97DLDAAAQBAJ
Hörmander, Lars (2007) [1985], The analysis of linear partial differential operators III: Pseudo-Differential Operators, Classics in Mathematics (Book 256), Springer-Verlag, p. 525, ISBN 978-3-540-49937-4, https://books.google.com/books?id=4ahUiHyUjhAC