Under CopyrightBerman, O.O.BermanKalcsics, J.J.KalcsicsKrass, D.D.KrassNickel, S.S.Nickel2022-03-0725.9.20082008https://publica.fraunhofer.de/handle/publica/29396210.24406/publica-fhg-293962en003006519The ordered gradual covering location problem on a networkreport