@article{DMGT_2009_29_2_a3,
     author = {Dereniowski, Dariusz},
     title = {Minimum vertex ranking spanning tree problem for chordal and proper interval graphs},
     journal = {Discussiones Mathematicae. Graph Theory},
     pages = {253--261},
     publisher = {mathdoc},
     volume = {29},
     number = {2},
     year = {2009},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMGT_2009_29_2_a3/}
}