target_sources( pe
    PRIVATE
    HCSITSBodyTrait.h
    Integrators.h
    PlainIntegrator.h
    HCSITS.h
    PlainIntegrator.impl.h
    HCSITS.impl.h
    DEM.h
    ICR.h
    DEM.impl.h
    ContactResolvers.h     
    )
