@article{SF_1996__53_2_135468,
     author = {T.G. Lavers},
     title = {The monoid of ordered partitions of a natural number.},
     journal = {Semigroup forum},
     pages = {44--56},
     publisher = {mathdoc},
     volume = {53},
     number = {2},
     year = {1996},
     zbl = {0852.20050},
     url = {http://geodesic.mathdoc.fr/item/SF_1996__53_2_135468/}
}