@CONFERENCE\{IMM1998-01181,
    author       = "M. H. Bakr and J. W. Bandler and R. Biernacki and S. Chen and K. Madsen",
    title        = "A Trust Region Aggressive Space Mapping Algorithm for {EM} Optimization",
    year         = "1998",
    month        = "jun",
    pages        = "1759-1762",
    booktitle    = "{IEEE} {MTT-S} Int. Microwave Symp",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/1181-full.html"
}