@article{CMJ_2000__50_1_a4,
     author = {Chartrand, Gary and Hansen, Lisa and Rashidi, Reza and Sherwani, Naveed},
     title = {Distance in stratified graphs},
     journal = {Czechoslovak Mathematical Journal},
     pages = {35--46},
     publisher = {mathdoc},
     volume = {50},
     number = {1},
     year = {2000},
     mrnumber = {1745456},
     zbl = {1033.05031},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/CMJ_2000__50_1_a4/}
}