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by Durlauf, Steven; Hansen, Lars Peter; Heckman, James J.; et al.
by Dycus, Stephen; Banks, William C.; Hansen, Peter Raven; et al.
by Hansen, Peter
by Glannon, Joseph W.; Perlman, Andrew M.; Raven-Hansen, Peter
by Hansen, Christian; Feldmann, Hans-peter
by Dycus, Stephen; Banks, William C.; Raven-Hansen, Peter
by Hansen, Peter H.
by Dycus, Stephen; Banks, William C.; Raven-Hansen, Peter; et al.
by Hansen; Hans Peter