@article {fraser1979variance,
	title = {Variance Reduction for Lattice Walks Grown with Markov Chain Sampling},
	journal = {J. Chem. Phys.},
	volume = {70},
	year = {1979},
	pages = {575{\textendash}580},
	author = {S. F. Fraser and M. A. Winnik*}
}
