by Drager, K. Harald, Robertson, Thomas V.
Published in Journal of Risk Analysis and Crisis Response (2014)

by Drager, Harald K., Soma, Helge, Gulliksen, Roy
Published in Modeling, identification and control (01.01.1989)

by Drager, K. Harald, Lovas, Gunnar G., Wiklund, J.O., Soma, Helge
Published in Journal of contingencies and crisis management (01.12.1993)

by Sullivan, James D, Harrald, John R, Mazzuchi, Thomas, Newsom, Donald E, Mitrani, Jacques E, Newkirk, Ross T, Drager, K Harald, Lovas, Gunnar G, Wiklund, J, Soma, Helge, Benini, Aldo A, Jarman, Alan M.G., McCoy, Lois Clark
Published in Journal of contingencies and crisis management (01.12.1993)