V.B Braginsky, F.Ya Khalili, A.A Kulaga, “Quantum-non-demolition measurement of the phase”, Physics Letters A, 202:1 (1995), 1
Hiromichi Nakazato, Mikio Namiki, Saverio Pascazio, “Exponential Behavior of a Quantum System in a Macroscopic Medium”, Phys. Rev. Lett., 73:8 (1994), 1063
K. Urbanowski, “Early-time properties of quantum evolution”, Phys. Rev. A, 50:4 (1994), 2847
Saverio Pascazio, Mikio Namiki, “Dynamical quantum Zeno effect”, Phys. Rev. A, 50:6 (1994), 4582