11. F. Haake
    Density Operator and Multitime Correlation Functions for Open Systems
    Phys. Rev. A3, 1723 (1971)
     
12. R. Bonifacio, P. Schwendimann, and F. Haake
    Quantum Statistical Theory of Superradiance. I
    Phys. Rev. A4, 302 (1971)
     
13. R. Bonifacio, P. Schwendimann, and F. Haake
    Quantum Statistical Theory of Superradiance. II
    Phys. Rev. A4, 854 (1971)
     
14. F. Haake and R. Glauber
    Quantum Statistics of Superradiant Pulses
    Phys. Rev. A5, 1457 (1972)
     
15. F. Haake
    Kinetic Equation for Critical Spin Fluctuations in the Heisenberg Magnet
    Z. Phys. 252, 118 (1972)
     
16. F. Haake
    Statistical Treatment of Open Systems by Generalized Master Equations
    Springer Tracts in Modern Physics 66, 98 (1973)