Those are Gaetano Mosca and Vilifredo Pareto, who argued that this group replenishes itself through "circulation.
One thinker who theorized about this group argued that it was distinguished by its high degree of organization and that its legitimacy was established by appeal to a "political formula.". Another thinker divided this group it into (*) "lions" and "foxes," and argued that foxes were dominant inperiods of upheaval, while lions dominated during times of stability. Those are Gaetano Mosca and Vilifredo Pareto, who argued that this group replenishes itself through "circulation." This group was also the subject of a 1956 work, which argued that this group was divided into overlapping economic, political, and military branches. For 10 points identify this group, the subject of Mosca's The Ruling Class and a study of who holds power in America by C. Wright Mills.
One thinker who theorized about this group argued that it was distinguished by its high degree of organization and that its legitimacy was established by appeal to a "political formula.".
elites [accept "The Power Elite" and also accept "the ruling class" before mention]