Bach V., Matte O.
Exponential Decay of Eigenfunctions of the Bethe-Salpeter Operator
(191K, postscript)

ABSTRACT.  Exponential decay of the bound states of the Bethe-Salpeter operator
is proven. Explicit estimate on the decay rates are derived,
and several norm estimates of operators involving the free 
Dirac operator and exponential weight functions are given.