@article{IJAMCS_2010_20_3_a13,
     author = {Mann, Z. \'A.},
     title = {Numbering action vertices in workflow graphs},
     journal = {International Journal of Applied Mathematics and Computer Science},
     pages = {591--600},
     publisher = {mathdoc},
     volume = {20},
     number = {3},
     year = {2010},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IJAMCS_2010_20_3_a13/}
}