[…] "accessibility". The definition is given in (74) in terms of the well-formedness condition (73): (73) *[γ...δ...], where γ and δ bear the same index; (74) α is "accessible to" β if and only if β is in the c-command domain of α and assignment to β of the index of α would not violate (73). - Chomsky (1993), a pag.212