Literature summary for 3.4.22.27 extracted from

Flannery, T.; McQuaid, S.; McGoohan, C.; McConnell, R.S.; McGregor, G.; Mirakhur, M.; Hamilton, P.; Diamond, J.; Cran, G.; Walker, B.; Scott, C.; Martin, L.; Ellison, D.; Patel, C.; Nicholson, C.; Mendelow, D.; McCormick, D.; Johnston, P.G.