@article{kobayashi_kotani_mutoh_nakamura_2015, 
  title={Uniform coverings of 2-paths with 4-cycles}, 
  volume={12}, 
  DOI={10.1016/j.akcej.2015.06.011}, 
  publisher={Elsevier BV}, 
  author={Kobayashi and Kotani and Mutoh and Nakamura}, 
  year={2015}
  }