1. [Agm78] S. Agmon,Lectures on exponential decay of solution of second order elliptic equations, Math. Notes, vol. 29, Princeton University Press, 1978.
2. [BDH89] P. Bolley, M. Dauge, and B. HelfferConditions suffisantes pour l'injection compacte d'espaces de Sobolev à poids, Séminaire équation aux dérivées partielles (France), vol. 1, Université de Nantes, France, 1989, pp. 1?14.
3. [BJS98] V. Bach, T. Jecko, and J. Sjöstrand,Correlation asymptotics of classical lattice spin systems with nonconvex Hamilton function at low temperature, 1998, (in preparation, 4 August).
4. [BL76] H. J. Brascamp and E. H. Lieb,On extensions of the Brunn-Minkowski and Prékopa-Leindler theorems including inequalities for log concave functions, and with applications to the diffusion equation, J. Funct. Analysis22 (1976), 366?389.
5. [BL92] J. Brüning and M. Lesch,Hilbert complexes, J. Funct. Analysis108 (1992), 88?132.