Chey, M. H., Rodgers, G. W., Chase, J. G. and Mander, J. B. (2010) “Using upper storeys as semi-active tuned mass damper building systems: A case study analysis”, Bulletin of the New Zealand Society for Earthquake Engineering, 43(2), pp. 126–133. doi: 10.5459/bnzsee.43.2.126-133.