ラース・ヘルマンダー
Hörmander, Lars (2012-03) [1963], Linear partial differential operators, Grundlehren der mathematischen Wissenschaften (Softcover reprint of the original 1st ed.), Springer-Verlag, p. 296, ISBN 978-3-642-46177-4, https://books.google.com/books?id=y3bmCAAAQBAJ
Hörmander, Lars (1990-02), An introduction to complex analysis in several variables, North-Holland Mathematical Library (3rd ed.), North Holland, p. 268, ISBN 978-1-493-30273-4, https://books.google.com/books?id=MaM7AAAAQBAJ ヘルマンダー, L. 著、笠原乾吉 訳『多変数複素解析学入門』東京図書、1973年、200頁。
Hörmander, Lars (2009) [1983], The analysis of linear partial differential operators I: Distribution Theory and Fourier Analysis, Classics in Mathematics, Springer-Verlag, p.