@article{NUMA_1959__1_131436,
     author = {E.W. DIJKSTRA},
     title = {A {Note} on {Two} {Problems} in {Connexion} with {Graphs.}},
     journal = {Numerische Mathematik},
     pages = {269--271},
     publisher = {mathdoc},
     volume = {1},
     year = {1959},
     zbl = {0092.16002},
     url = {http://geodesic.mathdoc.fr/item/NUMA_1959__1_131436/}
}