B. Ries Coloring some classes of mixed graphs. [Citation Graph (0, 0)][DBLP] Discrete Applied Mathematics, 2007, v:155, n:1, pp:1-6 [Journal]

Manuel de la Sen, Asier Ibeas On the stability properties of linear dynamic time-varying unforced systems involving switches between parameterizations from topologic considerations via graph theory. [Citation Graph (0, 0)][DBLP] Discrete Applied Mathematics, 2007, v:155, n:1, pp:7-25 [Journal]