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MR780068 35P20 (35J10 58G10 58G15 81C10)
Helffer, B.; Sjöstrand, J. Puits multiples en mécanique semi-classique. IV. Étude du complexe de Witten. (French) [Multiple wells in semiclassical mechanics. IV. Study of the Witten complex] Comm. Partial Differential Equations 10 (1985), no. 3, 245–340.
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