@article{10_4153_CJM_1978_068_x,
     author = {Duffus, Dwight and Rival, Ivan},
     title = {A {Logarithmic} {Property} for {Exponents} of {Partially} {Ordered} {Sets}},
     journal = {Canadian journal of mathematics},
     pages = {797--807},
     year = {1978},
     volume = {30},
     number = {4},
     doi = {10.4153/CJM-1978-068-x},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1978-068-x/}
}