@article{10_4064_am_11_3_357_375,
     author = {Krystyna Jerzykiewicz},
     title = {Algorithm 8. {A} program to shorten a sequence of sets of integer numbers},
     journal = {Applicationes Mathematicae},
     pages = {357--375},
     publisher = {mathdoc},
     volume = {11},
     number = {3},
     year = {1969},
     doi = {10.4064/am-11-3-357-375},
     language = {en},
     url = {http://geodesic.mathdoc.fr/articles/10.4064/am-11-3-357-375/}
}