@article{DMGT_2006_26_2_a12,
     author = {Dziechci\'nska-Halamoda, Zyta and Majcher, Zofia and Michael, Jerzy and Skupie\'n, Zdzis{\l}aw},
     title = {Extremum degree sets of irregular oriented graphs and pseudodigraphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {317--333},
     publisher = {mathdoc},
     volume = {26},
     number = {2},
     year = {2006},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2006_26_2_a12/}
}