Kellerson, T., Delaplane, R., and Olovsson, I. (1991) Disorder of a trigonally planar coordinated water molecule in cobalt sulphate heptahydrate, CoSO4*7 H2O (bieberite). Zeitschrift fur Naturforschung, 46b, 1635-1640.T .Kellersohn, R.G. Delaplane and I. Olovsson, Disorder of a ...