@article{ags-nlbluppcm-01
, author =	"C. Amb{\"u}hl and  B. G{\"a}rtner and B. von Stengel"
, title =	"A new lower bound for the list update problem in the partial cost model"
, journal =	"Theoretical Computer Science"
, volume =      "268"
, number =      "1"
, pages =       "3--16" 
, year =	"2001"
}