1. Observations of Ice Crystal Nucleation by Droplet Freezing in Natural Clouds
2. and 1972 ‘On the possible production of submicron ice fragments during riming or the freezing of droplets in free fall,’ Proc. Internat. Conf. Cloud Physics, London, pp. 27–28.
3. Freezing and Shattering of Water Droplets in Free Fall
4. and 1968b ‘The freezing of water droplets in free fall,’ Proc. Internat. Conf. Cloud Physics, Toronto, pp. 280–284.
5. The Fragmentation of Freezing Water Droplets in Free Fall