@article{MABA_2011_25_4_a3,
     author = {G. Cravo},
     title = {An {Algebraic} {Analysis} of {Workflows}},
     journal = {Mathematica balkanica},
     pages = {375},
     publisher = {mathdoc},
     volume = {25},
     number = {4},
     year = {2011},
     url = {http://geodesic.mathdoc.fr/item/MABA_2011_25_4_a3/}
}