P.  Vidallet, Albajes, R., and Gabarra, R., ?Host-feeding activity of Encarsia pergandiella Howard on Bemisia tabaci (Gennadius)?, Bulletin. Section Regionale Ouest Palaearctique, Organisation Internationale de Lutte Biologique., vol. 20, pp. 147-152, 1997.

R.  Gabarra, Arno, J., Alomar, O., and Albajes, R., ?Naturally occurring populations of Encarsia pergandiella (Hymenoptera: Aphelinidae) in tomato greenhouses?, Bulletin. Section Regionale Ouest Palaearctique, Organisation Internationale de Lutte Biologique., vol. 22, pp. 85-88, 1999.

R.  Gabarra, Batllori, M., and Albajes, R., ? Encarsia formosa and Encarsia pergandiella : addition or subtraction?, Bulletin. Section Regionale Ouest Palaearctique, Organisation Internationale de Lutte Biologique., vol. 26, pp. 33-38, 2003.

C.  Castane, Alomar, O., Goula, M., and Gabarra, R., ?Natural populations of Macrolophus caliginosus and Dicyphus tamaninii in the control of the greenhouse whitefly in tomato crops?, Bulletin. Section Regionale Ouest Palaearctique, Organisation Internationale de Lutte Biologique., vol. 23, pp. 221-224, 2000.

C.  Castane, Bordas, E., and Gabarra, R., ?Effect of two juvenoids on different devlopmental stages of the parasitoid Encarsia formosa and its host Trialeurodes vaporariorum ?, Investigación Agraria, Producción y Protección Vegetales, vol. 3, pp. 233-242, 1988.

J.  Arno and Gabarra, R., ?Whitefly species composition in winter tomato greenhouses?, Bulletin. Section Regionale Ouest Palaearctique, Organisation Internationale de Lutte Biologique., vol. 17, pp. 104-109, 1994.

J.  Arno, Moliner, J., and Gabarra, R., ?Integrated pest control of early greenhouse tomato in the Isle of Menorca?, Boletín de Sanidad Vegetal Plagas, vol. 20, pp. 501-509, 1994.