Eastham, K., Sweet, J., & European Environment Agency. (2002). Genetically modified organisms (GMOs): The significance of gene flow through pollen transfer: a review and interpretation of published literature and recent/current research from the ESF 'Assessing the Impact of GM Plants' (ASIGM) programme for the European Science Fountain and the European Environmental Agency. Copenhagen: European Environment Agency.

Eastham, Katie., Jeremy Sweet, and European Environment Agency. Genetically Modified Organisms (GMOs): The Significance of Gene Flow Through Pollen Transfer: A Review and Interpretation of Published Literature and Recent/current Research From the ESF 'Assessing the Impact of GM Plants' (ASIGM) Programme for the European Science Fountain and the European Environmental Agency. Copenhagen: European Environment Agency, 2002.

Eastham, Katie., Jeremy Sweet, and European Environment Agency. Genetically Modified Organisms (GMOs): The Significance of Gene Flow Through Pollen Transfer: A Review and Interpretation of Published Literature and Recent/current Research From the ESF 'Assessing the Impact of GM Plants' (ASIGM) Programme for the European Science Fountain and the European Environmental Agency. Copenhagen: European Environment Agency, 2002.