[1] Berge Claude:
Théorie des graphes et ses applications. Russian translation, Moscow 1962.
MR 0155312 |
Zbl 0101.16602
[2] Sekanina Milan:
On an Ordering of the Set of Vertices of a Connected Graph. Publ. Fac. Sci. Univ. Brno, Tchécoslovaquie, No 412 (1960), 137-142.
MR 0140095
[3] Sekanina Milan:
On an Ordering of the Vertices of Graphs. Čas. pro pěst. matematiky, 88 (1963), 265-282.
MR 0181588