Studie der Rand-Corporation:
Extending RussiaCompeting from Advantageous GroundJames Dobbins, Raphael S. Cohen, Nathan Chandler, Bryan Frederick, Edward Geist, Paul DeLuca, Forrest E. Morgan, Howard J. Shatz, Brent Willia
https://www.rand.org/content/dam/rand/pubs/research_reports/RR3000/RR3063/RAND_RR3063.pdf