@article{MilTalTen-Algs-99,
title = {Optimal coarsening of unstructured meshes},
author = {Gary L. Miller and Dafna Talmor and Shang-Hua Teng},
journal = {J. Algorithms},
volume = {31},
number = {1},
pages = {29--65},
month = {Apr},
year = {1999}}