Found:

Relativization

SYNTAX: process by which a relative clause (e.g. the man [who you see e]) is derived from an underlying non-relative clause (the man [you see the man]). The derivation includes NP-deletion under identity (the man), insertion of a relative pronoun (who), and wh-movement. This analysis has been replaced by one in which relative pronouns are base-generated.

LIT.	Chomsky, N. (1965) Smits, R.J.C. (1989)