Nayantara Bhatnagar Sam Greenberg Dana Randall The Effect of Boundary Conditions on Mixing Rates of Markov Chains. 280-291 2006 conf/approx/2006 APPROX-RANDOM http://dx.doi.org/10.1007/11830924_27 db/conf/approx/approx2006.html#BhatnagarGR06