@article{EXMA_1992__1_1_232857,
     author = {Cohen, Henri and Lewin, Leonard and Zagier, Don},
     title = {A sixteenth-order polylogarithm ladder.},
     journal = {Experimental mathematics},
     pages = {25--34},
     year = {1992},
     volume = {1},
     number = {1},
     zbl = {0763.11049},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/EXMA_1992__1_1_232857/}
}