Bolley, Pierre; Camus, Jacques; Helffer, Bernard Remarques sur l’hypoellipticite. (French) Zbl 0339.35029 C. R. Acad. Sci., Paris, Sér. A 283, 979-982 (1976). Page: −5 −4 −3 −2 −1 ±0 +1 +2 +3 +4 +5 Show Scanned Page Cited in 2 Documents MSC: 35H10 Hypoelliptic equations 35D10 Regularity of generalized solutions of PDE (MSC2000) 35J70 Degenerate elliptic equations × Cite Format Result Cite Review PDF