IMRICH, Wilfried, PETERIN, Iztok, ŠPACAPAN, Simon in ZHANG, Cun-Quan, 2010, NZ-flows in strong products of graphs. Journal of graph theory [na spletu]. 2010. Vol. 64, no. 4, p. 267–276. [Dostopano 15 april 2025]. Pridobljeno s: http://dx.doi.org/10.1002/jgt.20455