@article{KJM_2012_36_1_a11,
     author = {Shariefuddin Pirzada and Koko K. Kayibi and Nasir A. Shah},
     title = {Tripartite multidigraphs and imbalances},
     journal = {Kragujevac Journal of Mathematics},
     pages = {109 },
     publisher = {mathdoc},
     volume = {36},
     number = {1},
     year = {2012},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/KJM_2012_36_1_a11/}
}