A smooth manifold $M$ is a manifold with a cylindrical end if there exists a compact subset $K\subset M$ such that $M\backslash K$ is diffeomorphic to $\Omega\times (r,\infty)$ where $\Omega$ is a compact manifold. This is a special class of non-compact manifolds where elliptic theory of differential operators is well-understood, Sobolev embeddings, Hodge theory, Fredholm theory are already know, standard references are:
i) R.B. Lockhart and R.C. McOwen. Elliptic differential operators on noncompact manifolds. Ann.Scuola Norm. Sup. Pisa Cl. Sci., 12 (1985), 409–447.
ii)R.B. Lockhart. Fredholm, Hodge and Liouville theorems on noncompact manifolds.Trans. Amer. Math. Soc., 301:1–35, 1987.
iii) V.G. Maz’ya and B.A. Plamenevski ̆ Estimates in Lp and Holder classes and Miranda-Agmon maximum principle for solutions of elliptic boundary value problems in domains with singular points on the boundary. Math. Nachr., 81:25–82, 1978.
I am looking for references of elliptic operators on non compact manifolds such that outside a set $K$ (possibly non compact) the space $M\backslash K$ is diffeomorphic to $\Omega\times (r,\infty)\times \mathbb{R}$. This case is more general than the cylindrical case but close to it and it seems natural to consider such spaces, however I have not been able to find any references.
Any reference or comment you could provide about elliptic operators on this class of manifolds would be very useful.
Thanks!!