@article{article24924b03,
title   = {Minimum cycle cover and Chinese postman problems on mixed graphs with bounded tree-width},
author = {Fernandes, Cristina Gomes and Lee, Orlando and Wakabayashi, Yoshiko},
year = {2009},
doi = {10.1016/j.dam.2007.10.032},
journal   = {Discrete Applied Mathematics}
}