1. The Attack on Plant Breeders Rights Legislation and the involvement of the Multi-Nationals in plant breeding and the world's seeds business;ASSINSEL,1977
2. Contestable markets: an uprising in the theory of industry structure;Baumol;American Economic Review,1982
3. Les formes recentes de l'internationalisation dans le secteur des semences: un essai d'interpretation;Bertrand;Colloque sur les Bio Technologies, Rio de Janeiro 27–29 June,1984
4. Extract on herbicides from Science Now;Bevan,1985