Further investigations of the sex pheromone of female pear gall midge, Contarinia pyrivora

David R. Hall, Daniel P. Bray, Dudley I. Farman, Lakmali Amarawardana, Jerry V. Cross, Michelle T. Fountain, Nico Ionita, Gerjan W. Brouwer, Sarah M. Kemp, Renske Petré, Marc Lateur, Alexis Jorion, Louis Hautier, Vaccari Giacomo, Stefano Vergnani, Stefano Caruso