Pierre Hyvernat. Some properties of inclusions of multisets and contractive boolean operators. Discrete Mathematics, 329:69-76, 2014. [doi]
@article{Hyvernat14,
title = {Some properties of inclusions of multisets and contractive boolean operators},
author = {Pierre Hyvernat},
year = {2014},
doi = {10.1016/j.disc.2014.04.008},
url = {http://dx.doi.org/10.1016/j.disc.2014.04.008},
researchr = {https://researchr.org/publication/Hyvernat14},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {329},
pages = {69-76},
}