1. WH Zurek, “Pointer Basis of Quantum Apparatus: Into What Mixture Does the Wavepacket Collapse?,” Phys. Rev. D 24:1516 (1981).
2. WH Zurek, “Environment-Induced Superselection Rules,” Phys. Rev. D 26:1862 (1982).
3. E.P. Wigner, “Review of Quantum Mechanical Measurement Problem,” p. 43 of Ref. 6.
4. H.D. Zeh, “On the Irreversibility of Time and Observation in Quantum Theory,” in Foundations of Quantum Mechanics, B. d’Espagnat, ed., Academic Press, New York (1971).
5. W.H. Zurek, “Information Transfer in Quantum Measurements: Irreversibility and Amplification,” p. 87 in Ref. 6.