  In this companion paper to arXiv:0802.1928 we provide an example of an
isolated surface singularity $R$ over a number field such that $K_0(R) =
K_0(R[t])$ but $K_0(R) \neq K_0(R[t_1,t_2])$. This answers, negatively, a
question of Bass.

K-Theory and Homology