BibTeX: 
@article{Dijkstra_Shortest_PathAFP,
author = {Benedikt Nordhoff and Peter Lammich},
title = {Dijkstra's Shortest Path Algorithm},
journal = {Archive of Formal Proofs},
month = jan,
year = 2012,
note = {\url{http://isaafp.org/entries/Dijkstra_Shortest_Path.html},
Formal proof development},
ISSN = {2150914x},
}
