@article{DeuflhardHuisingaFischeretal.2000, author = {Peter Deuflhard and Wilhelm Huisinga and Alexander Fischer and Christof Sch{\"u}tte}, title = {Identification of Almost Invariant Aggregates in Reversible Nearly Uncoupled Markov Chains}, journal = {Lin. Alg. Appl.}, volume = {315}, pages = {39 -- 59}, year = {2000}, }