@article{NSJOM_2000_30_3a_16,
     author = {I. 

 Tri\v{c}kovi\'c},
     title = {Formalizing activity diagram of {UML} by {Petri} nets},
     journal = {Novi Sad Journal of Mathematics},
     pages = {161-171},
     publisher = {mathdoc},
     volume = {30},
     number = {3},
     year = {2000},
     url = {http://geodesic.mathdoc.fr/item/NSJOM_2000_30_3a_16/}
}