P. E. Ellis

The Marching Behaviour of Hoppers of the African Migratory Locust (Locusta migratoria migratorioides R. & F.) in the Laboratory.

P. Ellis, P. E. Ellis, 1951 .

Studies on numbers and mortality in field populations of the desert locust (Schistocerca gregaria Forskål).

C. Ashall, C. Ashall, P. Ellis, 1962 .

Field Studies on diurnal Behaviour, Movement and Aggregation in the Desert Locust (Schistocerca gregaria Forskål).

C. Ashall, C. Ashall, P. Ellis, 1957 .