Subject
Applied Mathematics,Analysis
Reference13 articles.
1. A. Ancona, J. London Math. Soc., 2:2 (1986), 274–290.
2. E. B. Davies, J. Operator Theory, 12:1 (1984), 177–196.
3. Cambridge Tracts in Mathematics;E. B. Davies,1989
4. E. B. Davies, The Maz’ya Anniversary Collection, Birkhäuser, Basel, 1999, 55–67.
5. H. Donnelly, Ill. J. Math., 31:4 (1987), 692–698.