@CONFERENCE\{IMM2003-04800,
    author       = "M. Kulahci and J. Ramirez and M. Cotter and R. Tobias",
    title        = "Fractionation of Two-level Designs for Multi-Step Processes (Preserving the Split-Plot Structure)",
    year         = "2003",
    booktitle    = "European Network for Business and Industrial Statistics Conference, Barcelona-Spain",
    volume       = "",
    series       = "",
    editor       = "",
    publisher    = "",
    organization = "",
    address      = "",
    url          = "http://www2.compute.dtu.dk/pubdb/pubs/4800-full.html"
}