G.  Neuffer, ?The situation in the San Jose scale ( Quadraspidiotus perniciosus Comst.) areas of Baden-Wuerttemberg twenty years after releasing Prospaltella perniciosi Tow?, Anzeiger für Schädlingskunde, Pflanzen- und Umweltschutz, vol. 82, pp. 503-514, 1975.

G.  Neuffer, ?Application problems with biological control under practical conditions?, Schriftenreihe der Bundesministers für Ernährung, Landwirtschaft und Forsten (A), vol. No 344, pp. 100-108, 1987.

G.  Neuffer, ?The abundance and increase of the Sane José scale Quadraspidiotus perniciosus Comst. and its natural enemy Prospaltella perniciosi Tow. A summary of 30 years' investigations?, Gesunde Pflanzen, vol. 42, pp. 89-96, 1990.

G.  Neuffer, ?On the rearing and spread of Prospaltella perniciosi Tower and other parasites of Quadraspidiotus perniciosus in Baden-Württemberg ?, Nachrichtenblatt des Deutschen Pflanzenschutzdienstes, Berlin (N.F.), vol. 14, pp. 97-101, 1962.

G.  Neuffer, ?On release experiments with Prospaltella perniciosi Tower (Hymenoptera, Aphelinidae) against Quadraspidiotus perniciosus in Baden-Wurttemberg?, Entomophaga, vol. 9, pp. 131-136, 1964.

G.  Neuffer, ?Remarks on the parasite fauna of Quadraspitiotus pernciosus Comst. and on the rearing of bisexual Prospaltella pernisiosi Tow. in the insectary?, Zeitschrift für Pflanzenkrankheiten (Pflanzenpathologie) und Pflanzenschutz, vol. 71, p. 1-Nov, 1964.

G.  Neuffer, ?On the parasite fauna of Quadraspidiotus perniciosus with particular reference fo the imported Prospaltella perniciosi Tower (Hym. Aphelinidae)?, Entomophaga, vol. 11, pp. 383-393, 1966.

G.  Neuffer, ?An account of the mass rearing of Prospaltella perniciosi Two. in a modified insectarium in Stuttgart?, Entomophaga, vol. 12, pp. 235-239, 1967.

G.  Neuffer, ?The effectiveness of the aphelinid, Prospaltella perniciosi Tower in the part of southwestern Germany infested by the San José scale, Quadraspidiotus perniciosus ?, Anzeiger für Schädlingskunde und Pflanzenschutz, vol. 41, pp. 97-101, 1968.

C.  Benassy, Mathys, G., Neuffer, G., and Milaire, H., ?L'utilisation practique de Prospaltella perniciosi Tow. parasite du pou de San José Quadraspidiotus perniciosus Comst?, Entomophaga Mémoires Hors-Série, vol. 4, p. 28pp, 1968.