References for the Graph and Network Algorithms package?

Like a similar question before, I cannot find references to the algorithms used in some of the graph theory routines. For instance, I have tried to find exactly how you determine the connected components of a graph. This leads to the function connectedComponents(G), which you cannot find anywhere in the source material.

So, could you please provide a full set of references to the algorithms you are employing for the graph theory package? For that matter, in general, could you always provide references to the algorithms that MathWorks uses across the board for any of its algorithms.

I do understand if some of your code is proprietary and as such a "trade secret", in which case, a simple statement to that effect would help those of us publishing scientific results based on Matlab output.

Thank you for your time, Kevin Mcilhany US Naval Academy