1. Duration of tornadoes;Battan;Bull. Amer. Met. Soc.,1959
2. Line squall and minor tornadoes at Holyhead, 23 November 1981;Kemp;Meteorological Magazine,1982
3. Tornadoes in Britain during 1963-6;Lacy;Weather,1968
4. Tornadoes in Britain: their intensities and distribution in space and time;Meaden;J. Meteorology, U.K.,1976
5. British tornadoes, annual totals 1958-1979;Meaden;J. Meteorology, U.K.,1980