?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Ermoliev%2C+Y.M.&rft.aulast=Ermoliev&rft.aufirst=Y.M.&rft.date=1994&rft.title=Adaptive+cost-effective+ambient+charges+under+incomplete+information&rft.genre=proceeding