@article{10_4153_CJM_1978_034_1,
     author = {Duffus, D. and J\'onsson, B. and Rival, I.},
     title = {Structure {Results} for {Function} {Lattices}},
     journal = {Canadian journal of mathematics},
     pages = {392--400},
     year = {1978},
     volume = {30},
     number = {2},
     doi = {10.4153/CJM-1978-034-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-034-1/}
}