Found:

Wh-movement

SYNTAX: movement of a wh-phrase. Wh-movement always moves the moved element to an A-bar position, in particular the specifier position of CP. Languages differ with respect to whether this movement is overt or not; while wh-movement is overt in English (see wh-in-situ) it appears to be covert in Chinese, and may be overt or covert in French.

LIT.	Chomsky, N. (1993) Chomsky, N. (1986b) Chomsky, N. (1977b) Chomsky, N. (1973) Huang, James (1982) Lasnik, H. and M. Saito (1992) Lasnik, H. and M. Saito (1984)