@misc{Poniatowski_Stanisław_(1884-1945)_Hierarchical,
 author={Poniatowski, Stanisław (1884-1945)},
 howpublished={online},
 language={pol},
 language={ger},
 type={text},
 title={Hierarchical division of states. The creation of the aristocracy},
 keywords={caste, state, aristocracy},
}