(:notitlegroup:) 

   @article{crb93,
    title     = {Parameter Estimation Bounds on Estimating Geophysical Parameters Using Matched
                Field Tomography},
    author    = {Arthur A. Baggeroer and Henrik Schmidt},
    journal   = {Journal Acoustical Society of America},
    pages     = {2400(A)},
    volume    = {93(4)},
    year      = {1993}}