Integral relations for the asymptotic normalization of the triton

Lehman and Gibson have recently derived an integral relation for $C_t$, the normalization of the $n-d$ tail of the triton wave function. We give (1) a concise alternative derivation of the Lehman-Gibson result, and (2) an explicit evaluation of $C_t$ in momentum space for the case in which the two-body interaction is not purely local or purely separable. This evaluation in general involves a five dimensional integration.