@article{DMGT_2007_27_3_a4,
     author = {Szumny, Waldemar and W{\l}och, Andrzej and W{\l}och, Iwona},
     title = {On (k,l)-kernels in {D-join} of digraphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {457--470},
     publisher = {mathdoc},
     volume = {27},
     number = {3},
     year = {2007},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2007_27_3_a4/}
}