@article{10_4153_CJM_1977_069_1,
     author = {Foldes, Stephane and Hammer, Peter L.},
     title = {Split {Graphs} {Having} {Dilworth} {Number} {Two}},
     journal = {Canadian journal of mathematics},
     pages = {666--672},
     year = {1977},
     volume = {29},
     number = {3},
     doi = {10.4153/CJM-1977-069-1},
     url = {http://geodesic.mathdoc.fr/articles/10.4153/CJM-1977-069-1/}
}