Sifting the Academic Literature

We're getting there...

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I've been sifting the academic literature on-line databases looking for papers on security leadership. Security and Security Management trade magazines have some articles and Security Journal has a couple papers. Another interesting sources is the Security Executive Council.  There is no end of writing on leadership, and of course plenty dealing with leadership in the military and law enforcement fields, but not so much on the effect of leadership on private security organizations.  My mind boggles that we used to do this sort of research without computers!  Again, any leads you can offer will be greatly appreciated.