@article{Katsumata_2013,
    doi = {10.1016/j.ic.2012.10.014},
    url = {https://doi.org/10.1016%2Fj.ic.2012.10.014},
    year = {2013},
    month = {jan},
    publisher = {Elsevier {BV}},
    volume = {222},
    pages = {228--246},
    author = {Shin-ya Katsumata},
    title = {Relating computational effects by $\top$$\top$-lifting},
    journal = {Information and Computation}
}

@article{Katsumata_2013, doi = {10.1016/j.ic.2012.10.014}, url = {https://doi.org/10.1016%2Fj.ic.2012.10.014}, year = {2013}, month = {jan}, publisher = {Elsevier {BV}}, volume = {222}, pages = {228--246}, author = {Shin-ya Katsumata}, title = {Relating computational effects by $\top$$\top$-lifting}, journal = {Information and Computation} }