@article{SLC_1986_15_a10,
     author = {Josef Wolfgang Degen},
     title = {Set {Theory} and {Infinitary} {Binomial} {Coefficients}},
     journal = {S\'eminaire lotharingien de combinatoire},
     year = {1986},
     volume = {15},
     url = {http://geodesic.mathdoc.fr/item/SLC_1986_15_a10/}
}