See Constantine de Administrando Imperio, c.
3, 4, 13, 38 - 42, Katona has nicely fixed the composition
of this work to the years 949, 950, 951, (p. 4 - 7.) The
critical historian (p. 34 - 107) endeavors to prove the
existence, and to relate the actions, of a first duke Almus,
the father of Arpad, who is tacitly rejected by
Constantine.