1. Butler Ellis, M.C., Bradley, 2002. The influence of formulation on spray drift. Aspect of Applied Biology 66, International Advances in Pesticide Application, pp. 257–259.
2. How adjuvants influence spray formation with different hydraulic nozzles;Butler Ellis;Crop Protect.,1999
3. How surface tension of surfactant solutions influences the characteristics of sprays produced by hydraulic nozzles used for pesticides application;Butler Ellis;Colloids Surf. A Physicochem. Eng. Aspects,2001
4. Statistique théorique et appliqué, tome 2 Inférence statistiques à une et à deux dimensions;Dagnelie,1998
5. ISO. 2005. ISO/DIS 22856-1 Equipment for Crop Protection—Laboratory Measurement of Spray Drift—Part 1: Wind Tunnels.