@ARTICLE{Fritzsche.Mehrmann.Szyld.Virnik.08,
  author = {David Fritzsche and Volker Mehrmann and Daniel B. Szyld 
             and Elena Virnik},
  title = {An {SVD} approach to identifying meta-stable states of 
            {M}arkov chains},
  journal= {Electronic Transactions on Numerical Analysis},
  volume = 29,
  year = 2008,
  pages={46--69}
}