@article{TAC_2004_13_a11,
     author = {Robert Rosebrugh and R.J. Wood},
     title = {Split structures},
     journal = {Theory and applications of categories},
     pages = {172--183},
     publisher = {mathdoc},
     volume = {13},
     year = {2004},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/TAC_2004_13_a11/}
}