Three thoughtful readings on Whiteread:
1. Uros Cvoro's 'The Present body, the Absent body, and the Formless' provides a terribly lucid and necessary translation of Whiteread's work in Derridian terms. While Whiteread is typically referenced to Derrida, I have found most links shallow and the critique lacking. (We are typically given a logic somewhat along the lines of Derrida = trace = presence + absence = Whiteread).
2. Damon Hyldreth's 'The Uncanny' discusses Whiteread in Freudian terms based on the double.
3. Doreen Massey's 'Space-time and the Politics of Location' discusses how 'House' functions in social terms.