@book{Norris_1998, address={Cambridge, UK}, edition={1st pbk. ed}, title={Markov chains}, volume={Cambridge series on statistical and probabilistic mathematics}, url={http://catdir.loc.gov/catdir/toc/cam027/96031570.html}, publisher={Cambridge University Press}, author={Norris, J. R.}, year={1998} }
@book{Taylor, Howard M._Karlin, Samuel_1998, address={San Diego}, edition={3rd ed}, title={An introduction to stochastic modeling}, publisher={Academic Press}, author={Taylor, Howard M. and Karlin, Samuel}, year={1998} }