BibTeX
@TECHREPORT{
         Liu1988OtL,
       AUTHOR = "D. C. Liu and J. Nocedal",
       TITLE = "On the Limited Memory {BFGS} Method for Large Scale Optimization",
       INSTITUTION = "Northwestern University",
       YEAR = "1988",
       TYPE = "Technical Report",
       NUMBER = "NAM 03",
       ADDRESS = "Evanston, Ill.",
       REFERRED = "[Navon1991Aot]."
}