Guillemin, Victor Complexes of differential operators. (English) Zbl 0281.35069 Partial diff. Equ., Berkeley 1971, Proc. Sympos. Pure Math. 23, 125-127 (1973). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 1 Document MSC: 35N10 Overdetermined systems of PDEs with variable coefficients PDFBibTeX XML