Minimal singular sets for linear differential operators with constant coefficients

MR0463654 Yamada, Haruki Haruki YAMADA Minimal singular sets for linear differential operators with constant coefficients Funkcialaj Ekvacioj. Serio Internacia 18 1975 245--255 http://fe.math.kobe-u.ac.jp/FE/Free/vol18/fe18-3-5.pdf http://fe.math.kobe-u.ac.jp/FE/FE_pdf_with_bookmark/FE11-20-en_KML/fe18-245-255/fe18-245-255.pdf http://www.ams.org/mathscinet-getitem?mr=MR0463654 fe18-245-255 1975 Minimal Singular Sets for Linear Differential Operators with Constant Coefficients YAMADA, Haruki YAMADA, Haruki

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